Aisin–Toyota 8-speed automatic transmission

Template:Short description Template:Infobox automobile

Aisin and Toyota offer various 8-speed automatic transmissions for use in both longitudinal Template:Efn^[1] and transverse Template:Efn^[2] engine vehicles, based on a common, globally patented gearset concept.Template:Efn^[1]Template:Efn^[2]

The Aisin TL-80SN (Toyota AA 80E/AA 80F/AA 81E) series is the world's first 8-speed automatic transmission for passenger cars.^[3] It is designed for longitudinal engines Template:Efn^[1] and was first used in the 2007 model year Lexus LS 460.

Beginning with the AW F8 transmission Aisin and Toyota derived a transverse engine variantTemplate:Efn^[2] by adapting this globally patented gearset concept to fit into the same space as the previous generation U6xx Lepelletier gear mechanism-based 6-speed transmissions to increase the overall ratio spread, reduce gear steps, and increase the torque capacity for transverse engine vehicles as well.^[4]

The Aisin AW F8 F45 (Toyota UA 80E/UA 80F) series is the world's first 8-speed automatic transmission designed for use in transverse engine Template:Efn^[2] applications.^[5] It is also called EAT8 (PSA), GA 8F 22AW (BMW/Mini), TG-81SC (Volvo),^[6] AF50-8 (Opel/Vauxhall),^[7] AW F8 F45 (Cadillac),^[8] and AQ 450 (Volkswagen Group).^[9] First usage was in the 2013 model year Lexus RX 350 F Sport.

Toyota’s marketing name for the transmission is "Direct Shift – 8AT 8-speed automatic transmission".^[10]^[11] In contrast to the UB 80E/F transmission, which was developed by Aisin AW for Toyota, the UA 80E/F was developed in a joint venture between Toyota and Aisin AW. Due to its worldwide application, development was carried out in a global manner involving R&D resources in Japan and the US. The Aisin AW F8 F35 (Toyota UB 80E/F) transmissions are used for lower torque applications, such as 4-cylinder engines, and rated for Template:Convert.^[12]

Gear RatiosTemplate:Efn
Aisin	Toyota	Template:Diagonal split header	Template:Font color Template:Efn	R1	1	2	3	4	5	6	7	8	Total Span	Span Center	Avg. Step	Compo- nents

Longitudinal engines Template:Efn^[1]																3 Gearsets 2 Brakes 4 Clutches
TL-80SN	AA 80E/F	2006	Template:Font color	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round
—	AB 80E/F	2015	Template:Font color	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round		Template:Round	Template:Round	Template:Round	Template:Round	Template:Round
TR-80SD	AE 80E/F	2010	Template:Font color	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round		Template:Round	Template:Round	Template:Round	Template:Round	Template:Round
TR-81SD	—		Template:Font color	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round		Template:Round	Template:Round	Template:Round	Template:Round	Template:Round
TR-82SD	—		Template:Font color	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round		Template:Round	Template:Round	Template:Round	Template:Round	Template:Round
—	AL 80E/F	2023	Template:Font color	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round		Template:Round	Template:Round	Template:Round	Template:Round	Template:Round
Transverse engines Template:Efn^[2]
AW F8 F45	UA 80E/F	2016	Template:Font color	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round
AW F8 F35	UB 80E/F	2016	Template:Font color	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round	Template:Round		Template:Round	Template:Round	Template:Round	Template:Round	Template:Round
TG-80LS	UB 80E/F	2017	Template:Font color	Template:Round	Template:Round	Template:Round		Template:Round	Template:Round		Template:Round	Template:Round	Template:Round	Template:Round	Template:Round
TBD	TBD	TBD	Template:Font color	Template:Round	Template:Round	Template:Round		Template:Round	Template:Round		Template:Round	Template:Round	Template:Round	Template:Round	Template:Round

Template:Notelist

Specifications

Layout (Gearset Concept)

All 8-speed automatic transmissions from Aisin and Toyota for passenger cars are based on the same layoutTemplate:Efn^[1]Template:Efn^[2] in both engines orientations.Template:Efn^[1]Template:Efn^[2] For transverse installation,Template:Efn^[2] the layout of the longitudinal installationTemplate:Efn^[1] was merely mirrored.Template:Efn^[1]Template:Efn^[2] Gearset 1 is not an ordinary one, but a reversed one. It consists of 2 pinions that mesh with each other. One of these pinions meshes with the sun gear, the other with the ring gear. As a results, the gearset generates different ratios and the sun gear rotates in the same direction as the ring gear when the planetary gear carrier is stationary. This made it possible to manage 8 speeds with 3 gearsets. As a result, the transmission is more compact than 8-speed transmissions from competitors. This means that an 8-speed automatic transmission was also possible for transverse engines.

Progress

Smaller parts and a hydraulic circuit with fewer components allow the transmission to maintain the same size as the previous LS 430's 6-speed transmission. The aluminum die-cast case is 10 % lighter, yet 30 % more rigid, even with two additional gears and a 22 % greater torque capacity the new transmission weighs Template:Convert or 10 % more than the previous unit. With new micro-laser technology gear tooth production tolerances have been reduced 50 %. Aluminum has also replaced steel on gear tooth surfaces. Shift times are as low as 350 milliseconds or 41 % faster than the previous LS 430's unit.

The Lexus IS F and LS 460 (with sport package) use Sport Direct Shift (SPDS) which allows for faster shift times. The torque converter can lockup from 2nd to 8th gears.

Two Possible Reverse Gears R1 Template:Font color

The gearset concept offers 2 reverse gears. Due to the increasing electronic control of automatic transmissions and engines, a fast reverse gear (i.e. designed to reduce wheel spin) is no longer necessary for problem-free starting in icy conditions (winter mode). It is therefore unlikely that car manufacturers will make use of this special option of a dedicated winter mode with an additional reverse gear R2. For this reason, the representation of Template:Font color In some data sheets, the gear ratio of R2 is given, presumably a careless error.^[1]^[13]^[14]

The direction is reversed in gearset 3, the outer one of the Ravigneaux gearset. Template:Font color To reduce the shaft speed for an appropriate reverse gear R1, the input (turbine) is put through gearset 1 first. This reduction corresponds to the ratio of the 3rd gear. Template:Font color

R1 And R2
Gear	Ratio · Algebra

R2	$i_{R 2} = - \frac{R_{3}}{S_{3}}$ Template:Efn^[1]Template:Efn^[2]^[14]^[13]
3	$i_{3} = \frac{R_{1}}{R_{1} - S_{1}}$
R2 x 3	$i_{R 2} i_{3} = - \frac{R_{3}}{S_{3}} \frac{R_{1}}{R_{1} - S_{1}} = \frac{R_{3}}{S_{3}} \frac{R_{1}}{S_{1} - R_{1}}$

R1	$i_{R 1} = \frac{R_{1} R_{3}}{S_{3} (S_{1} - R_{1})} = i_{R 2} i_{3}$

Template:Notelist

Ratios

Drivetrain
Model	Final Drive
AA 80E	2.937 2.85 2.69
AA 80F	3.133
AW F8 F35 AW F8 F45	4.398
AW F8 F45	3.075 3.200
AW F8 F45	2.561

Gear Ratio Analysis
With Assessment				Planetary Gearset: TeethTemplate:Efn				Count	TotalTemplate:Efn CenterTemplate:Efn	Avg.Template:Efn
With Assessment				Reversed	Ravigneaux			Count	TotalTemplate:Efn CenterTemplate:Efn	Avg.Template:Efn

Aisin Toyota	Version First Delivery			S₁Template:Efn R₁Template:Efn	S₂Template:Efn R₂Template:Efn	S₃Template:Efn R₃Template:Efn		Brakes Clutches	Ratio Span	Gear StepTemplate:Efn
Gear Ratio	Template:Font color Template:Efn $i_{R 2}$	R1 $i_{R 1}$	1 $i_{1}$	2 $i_{2}$	3 $i_{3}$	4 $i_{4}$	5 $i_{5}$	6 $i_{6}$	7 $i_{7}$	8 $i_{8}$
StepTemplate:Efn	$\frac{i_{R 1}}{i_{R 2}}$	$- \frac{i_{R 1}}{i_{1}}$ Template:Efn	$\frac{i_{1}}{i_{1}}$	$\frac{i_{1}}{i_{2}}$ Template:Efn	$\frac{i_{2}}{i_{3}}$	$\frac{i_{3}}{i_{4}}$	$\frac{i_{4}}{i_{5}}$	$\frac{i_{5}}{i_{6}}$	$\frac{i_{6}}{i_{7}}$	$\frac{i_{7}}{i_{8}}$
Δ StepTemplate:Efn Template:Efn				$\frac{i_{1}}{i_{2}} : \frac{i_{2}}{i_{3}}$	$\frac{i_{2}}{i_{3}} : \frac{i_{3}}{i_{4}}$	$\frac{i_{3}}{i_{4}} : \frac{i_{4}}{i_{5}}$	$\frac{i_{4}}{i_{5}} : \frac{i_{5}}{i_{6}}$	$\frac{i_{5}}{i_{6}} : \frac{i_{6}}{i_{7}}$	$\frac{i_{6}}{i_{7}} : \frac{i_{7}}{i_{8}}$
Shaft Speed	$\frac{i_{1}}{i_{R 2}}$	$\frac{i_{1}}{i_{R 1}}$	$\frac{i_{1}}{i_{1}}$	$\frac{i_{1}}{i_{2}}$	$\frac{i_{1}}{i_{3}}$	$\frac{i_{1}}{i_{4}}$	$\frac{i_{1}}{i_{5}}$	$\frac{i_{1}}{i_{6}}$	$\frac{i_{1}}{i_{7}}$	$\frac{i_{1}}{i_{8}}$
Δ Shaft SpeedTemplate:Efn	$\frac{i_{1}}{i_{R 1}} - \frac{i_{1}}{i_{R 2}}$	$0 - \frac{i_{1}}{i_{R 1}}$	$\frac{i_{1}}{i_{1}} - 0$	$\frac{i_{1}}{i_{2}} - \frac{i_{1}}{i_{1}}$	$\frac{i_{1}}{i_{3}} - \frac{i_{1}}{i_{2}}$	$\frac{i_{1}}{i_{4}} - \frac{i_{1}}{i_{3}}$	$\frac{i_{1}}{i_{5}} - \frac{i_{1}}{i_{4}}$	$\frac{i_{1}}{i_{6}} - \frac{i_{1}}{i_{5}}$	$\frac{i_{1}}{i_{7}} - \frac{i_{1}}{i_{6}}$	$\frac{i_{1}}{i_{8}} - \frac{i_{1}}{i_{7}}$

Longitudinal engines Template:Efn^[1]
TL-80SN AA 80E/F	Template:Convert · 2006			38 82	30 34	34 74		2 4	Template:Round Template:Round	Template:Font color Template:Efn
Gear Ratio	Template:Font color Template:Efn^[1] ^[13]^[14] $- \frac{37}{17}$	Template:Font color Template:Efn $- \frac{1, 517}{374}$	Template:Round $\frac{1, 517}{330}$	Template:Font color	Template:Round $\frac{41}{22}$	Template:Font color Template:Efn Template:Efn $\frac{24, 272}{16, 577}$	Template:Font color Template:Efn Template:Efn $\frac{1, 517}{1, 232}$	Template:Round $\frac{1}{1}$	Template:Round $\frac{1, 517}{1, 840}$	Template:Round $\frac{37}{54}$
Step	Template:Font color	Template:Font color Template:Efn	1.0000	Template:Font color Template:Efn	1.4617	Template:Font color Template:Efn	Template:Font color	1.2313	1.2129	1.2033
Δ StepTemplate:Efn				1.1545	1.1484	1.0704	Template:Font color Template:Efn	1.0152	1.0080
Speed	Template:Font color	Template:Font color	1.0000	1.6875	2.4667	Template:Font color	Template:Font color	4.5970	5.5758	6.7091
Δ Speed	Template:Font color	Template:Font color	1.0000	0.6875	0.7792	Template:Font color Template:Efn	Template:Font color Template:Efn	0.8636	0.9788	1.1333

— AB 80E/F	— Template:Convert^[15] · 2015			38 83	30 38	38 78		2 4	Template:Round Template:Round	Template:Font color Template:Efn
Gear Ratio	Template:Font color	Template:Font color Template:Efn $- \frac{1, 079}{285}$	Template:Round $\frac{1, 079}{225}$	Template:Font color Template:Efn Template:Efn $\frac{18, 343}{6, 525}$	Template:Round $\frac{83}{45}$	Template:Font color Template:Efn Template:Efn $\frac{18, 343}{12, 833}$	Template:Font color Template:Efn Template:Efn $\frac{1, 079}{889}$	Template:Font color Template:Efn $\frac{1}{1}$	Template:Round $\frac{3, 237}{3, 959}$	Template:Round $\frac{39}{58}$
Step	Template:Font color	Template:Font color Template:Efn	1.0000	Template:Font color Template:Efn	1.5241	Template:Font color Template:Efn	Template:Font color	Template:Font color	1.2230	1.2160
Δ StepTemplate:Efn				Template:Font color Template:Efn	1.1811	1.0957	Template:Font color Template:Efn	Template:Font color Template:Efn	1.0058
Speed	Template:Font color	Template:Font color	1.0000	1.7059	2.6000	Template:Font color	Template:Font color	4.7956	5.8653	7.1319
Δ Speed	Template:Font color	Template:Font color	1.0000	0.7059	0.8941	Template:Font color Template:Efn	Template:Font color Template:Efn	0.8444	1.0696	1.2667

TR-80SD AE 80E/F	Template:Convert^[16] · 2010			38 82	30 38	38 74		2 4	Template:Round Template:Round	Template:Font color Template:Efn
Gear Ratio	Template:Font color	Template:Font color Template:Efn $- \frac{1, 599}{418}$	Template:Round $\frac{533}{110}$	Template:Font color	Template:Round $\frac{41}{22}$	Template:Font color Template:Efn Template:Efn $\frac{9, 061}{3, 190}$	Template:Font color Template:Efn Template:Efn $\frac{533}{438}$	Template:Font color Template:Efn $\frac{1}{1}$	Template:Round $\frac{1, 599}{1, 960}$	Template:Round $\frac{39}{58}$
Step	Template:Font color	Template:Font color Template:Efn	1.0000	Template:Font color Template:Efn	1.5241	Template:Font color Template:Efn	Template:Font color	Template:Font color	1.2258	1.2133
Δ StepTemplate:Efn				Template:Font color Template:Efn	1.1751	1.0984	Template:Font color Template:Efn	Template:Font color Template:Efn	1.0103
Speed	Template:Font color	Template:Font color	1.0000	1.7059	2.6000	Template:Font color	Template:Font color	4.8455	5.9394	7.2061
Δ Speed	Template:Font color	Template:Font color	1.0000	0.7059	0.8941	Template:Font color Template:Efn	Template:Font color Template:Efn	0.8636	1.0939	1.2667

TR-81SD —	Template:Convert^[17] · 2010 —			38 82	36Template:Efn 44	44Template:Efn 96		2 4	Template:Round Template:Round	Template:Font color Template:Efn
Gear Ratio	Template:Font color	Template:Font color Template:Efn $- \frac{492}{121}$	Template:Round $\frac{164}{33}$	Template:Font color	Template:Round $\frac{41}{22}$	Template:Font color Template:Efn Template:Efn $\frac{1, 312}{913}$	Template:Font color Template:Efn Template:Efn $\frac{328}{271}$	Template:Font color Template:Efn $\frac{1}{1}$	Template:Round $\frac{984}{1193}$	Template:Round $\frac{24}{35}$
Step	Template:Font color	Template:Font color Template:Efn	1.0000	Template:Font color Template:Efn	1.5238	Template:Font color Template:Efn	Template:Font color	Template:Font color	1.2124	1.2028
Δ StepTemplate:Efn				Template:Font color Template:Efn	1.1750	1.0923	Template:Font color Template:Efn	Template:Font color Template:Efn	1.0079
Speed	Template:Font color	Template:Font color	1.0000	1.7500	2.6667	Template:Font color	Template:Font color	4.9697	6.0253	7.2475
Δ Speed	Template:Font color	Template:Font color	1.0000	0.7500	0.9167	Template:Font color Template:Efn	Template:Font color Template:Efn	0.8636	1.0556	1.2222

TR-82SD —	Template:Convert^[18] · 2010 —			38 83	36Template:Efn 44	44Template:Efn 96		2 4	Template:Round Template:Round	Template:Font color Template:Efn
Gear Ratio	Template:Font color	Template:Font color Template:Efn $- \frac{664}{165}$	Template:Round $\frac{664}{135}$	Template:Font color	Template:Round $\frac{83}{45}$	Template:Font color Template:Efn Template:Efn $\frac{1, 328}{929}$	Template:Font color Template:Efn Template:Efn $\frac{332}{275}$	Template:Font color Template:Efn $\frac{1}{1}$	Template:Round $\frac{996}{1205}$	Template:Round $\frac{24}{35}$
Step	Template:Font color	Template:Font color Template:Efn	1.0000	Template:Font color Template:Efn	1.5238	Template:Font color Template:Efn	Template:Font color	Template:Font color	1.2098	1.2054
Δ StepTemplate:Efn				Template:Font color Template:Efn	1.1810	1.0897	Template:Font color Template:Efn	Template:Font color Template:Efn	1.0037
Speed	Template:Font color	Template:Font color	1.0000	1.7500	2.6667	Template:Font color	Template:Font color	4.9185	5.9506	7.1728
Δ Speed	Template:Font color	Template:Font color	1.0000	0.7500	0.9167	Template:Font color Template:Efn	Template:Font color Template:Efn	0.8444	1.0321	1.2222

— AL 80E/F	— TBD · 2023			38 78	38 46	46 86		2 4	Template:Round Template:Round	Template:Font color Template:Efn
Gear Ratio	Template:Font color	Template:Font color Template:Efn $- \frac{1, 677}{460}$	Template:Round $\frac{1, 677}{380}$	Template:Font color Template:Efn Template:Efn $\frac{35, 217}{12, 540}$	Template:Round $\frac{39}{20}$	Template:Font color Template:Efn Template:Efn $\frac{35, 217}{23, 304}$	Template:Font color Template:Efn Template:Efn $\frac{1, 677}{1, 316}$	Template:Font color Template:Efn $\frac{1}{1}$	Template:Round $\frac{1, 677}{2, 114}$	Template:Round $\frac{43}{66}$
Step	Template:Font color	Template:Font color Template:Efn	1.0000	1.5714	1.4402	Template:Font color Template:Efn	Template:Font color	Template:Font color	1.2606	1.2176
Δ StepTemplate:Efn				Template:Font color Template:Efn	1.1161	1.0881	Template:Font color Template:Efn	Template:Font color Template:Efn	1.0353
Speed	Template:Font color	Template:Font color	1.0000	1.5714	2.2632	Template:Font color	Template:Font color	4.4132	5.5632	6.7737
Δ Speed	Template:Font color	Template:Font color	1.0000	0.5714	0.6917	Template:Font color Template:Efn	Template:Font color Template:Efn	0.9500	1.1500	1.2105
Transverse engines Template:Efn^[2]
AW F8 F35 UB 80E/F	Template:Convert^[12] · 2013			38 78	26 34	34 70		2 4	Template:Round Template:Round	Template:Font color Template:Efn
Gear Ratio	Template:Font color	Template:Font color Template:Efn $- \frac{273}{68}$	Template:Round $\frac{21}{4}$	Template:Font color Template:Efn Template:Efn $\frac{315}{104}$	Template:Round $\frac{39}{20}$	Template:Font color Template:Efn Template:Efn $\frac{1, 575}{1, 081}$	Template:Font color Template:Efn Template:Efn $\frac{105}{86}$	Template:Font color Template:Efn $\frac{1}{1}$	Template:Round $\frac{1, 365}{1, 688}$	Template:Round $\frac{35}{52}$
Step	Template:Font color	Template:Font color Template:Efn	1.0000	Template:Font color Template:Efn	1.5533	Template:Font color Template:Efn	Template:Font color	Template:Font color	1.2366	1.2014
Δ StepTemplate:Efn				Template:Font color Template:Efn	1.1605	1.1215	Template:Font color Template:Efn	Template:Font color Template:Efn	1.0293
Speed	Template:Font color	Template:Font color	1.0000	1.7333	2.6923	Template:Font color	Template:Font color	5.2500	6.4923	7.5833
Δ Speed	Template:Font color	Template:Font color	1.0000	0.7333	0.9590	Template:Font color Template:Efn	Template:Font color Template:Efn	0.9500	1.2423	1.3077

AW F8 F45 UA 80E/F	Template:Convert · 2013^[8]			42 82	26 34	34 70		2 4	Template:Round Template:Round	Template:Round Template:Efn
Gear Ratio	Template:Font color	Template:Font color Template:Efn $- \frac{287}{68}$	Template:Round $\frac{287}{52}$	Template:Font color Template:Efn Template:Efn $\frac{4, 305}{1, 352}$	Template:Font color Template:Efn $\frac{41}{20}$	Template:Round $\frac{3, 075}{2, 061}$	Template:Font color Template:Efn Template:Efn $\frac{205}{166}$	Template:Font color Template:Efn $\frac{1}{1}$	Template:Round $\frac{205}{256}$	Template:Round $\frac{35}{52}$
Step	Template:Font color	Template:Font color Template:Efn	1.0000	Template:Font color Template:Efn	Template:Font color	1.3740	Template:Font color	Template:Font color	1.2488	1.1897
Δ StepTemplate:Efn				Template:Font color Template:Efn	Template:Font color Template:Efn	1.1372	Template:Font color Template:Efn	Template:Font color Template:Efn	1.0496
Speed	Template:Font color	Template:Font color	1.0000	1.7333	2.6923	3.6992	Template:Font color	5.5192	6.8923	8.2000
Δ Speed	Template:Font color	Template:Font color	1.0000	0.7333	0.9590	1.0069	Template:Font color Template:Efn	1.0500	1.3731	1.3077

TG-80LS UB 80E/F	Template:Convert · 2017			38 78	30 38	38 78		2 4	Template:Round Template:Round	Template:Font color Template:Efn
Gear Ratio	Template:Font color	Template:Font color Template:Efn $- \frac{1, 521}{380}$	Template:Round $\frac{507}{100}$	Template:Font color Template:Efn Template:Efn $\frac{8, 619}{2, 900}$	Template:Round $\frac{39}{20}$	Template:Font color Template:Efn Template:Efn $\frac{8, 619}{5, 864}$	Template:Font color Template:Efn Template:Efn $\frac{9, 633}{7, 828}$	Template:Font color Template:Efn $\frac{1}{1}$	Template:Round $\frac{1, 521}{1, 882}$	Template:Round $\frac{39}{58}$
Step	Template:Font color	Template:Font color Template:Efn	1.0000	Template:Font color Template:Efn	1.5241	Template:Font color Template:Efn	Template:Font color	Template:Font color	1.2373	1.2019
Δ StepTemplate:Efn				Template:Font color Template:Efn	1.1488	1.1108	Template:Font color Template:Efn	Template:Font color Template:Efn	1.0295
Speed	Template:Font color	Template:Font color	1.0000	1.7059	2.6000	Template:Font color	Template:Font color	5.0700	6.2733	7.5400
Δ Speed	Template:Font color	Template:Font color	1.0000	0.7059	0.8941	Template:Font color Template:Efn	Template:Font color Template:Efn	0.9500	1.2033	1.2667

TBD	TBD · TBD			38 78	36Template:Efn 44	44Template:Efn 96		2 4	Template:Round Template:Round	Template:Font color Template:Efn
Gear Ratio	Template:Font color	Template:Font color Template:Efn $- \frac{234}{55}$	Template:Round $\frac{26}{5}$	Template:Font color Template:Efn Template:Efn $\frac{104}{35}$	Template:Round $\frac{39}{20}$	Template:Font color Template:Efn Template:Efn $\frac{416}{283}$	Template:Font color Template:Efn Template:Efn $\frac{104}{85}$	Template:Font color Template:Efn $\frac{1}{1}$	Template:Round $\frac{936}{1, 145}$	Template:Round $\frac{24}{35}$
Step	Template:Font color	Template:Font color Template:Efn	1.0000	Template:Font color Template:Efn	1.5238	Template:Font color Template:Efn	Template:Font color	Template:Font color	1.2233	1.1921
Δ StepTemplate:Efn				Template:Font color Template:Efn	1.1486	1.1042	Template:Font color Template:Efn	Template:Font color Template:Efn	1.0261
Speed	Template:Font color	Template:Font color	1.0000	1.7500	2.6667	Template:Font color	Template:Font color	5.200	6.3611	7.5833
Δ Speed	Template:Font color	Template:Font color	1.0000	0.7500	0.9167	Template:Font color Template:Efn	Template:Font color Template:Efn	0.9500	1.1611	1.2222

Ratio R & Even	$i_{R 2} = - \frac{R_{3}}{S_{3}}$ Template:Efn		$\frac{R_{1} R_{3} (S_{2} + R_{2})}{S_{2} (R_{1} - S_{1}) (S_{3} + R_{3})}$		$\frac{R_{1} R_{3} (S_{2} + R_{2})}{S_{2} R_{3} (R_{1} - S_{1}) + R_{1} R_{2} R_{3} - S_{1} S_{2} S_{3}}$			$i_{6} = \frac{1}{1}$	$i_{8} = \frac{R_{3}}{S_{3} + R_{3}}$
Ratio R & Odd	$i_{R 1} = \frac{R_{1} R_{3}}{S_{3} (S_{1} - R_{1})}$		$i_{1} = \frac{R_{1} R_{2} R_{3}}{S_{2} S_{3} (R_{1} - S_{1})}$		$i_{3} = \frac{R_{1}}{R_{1} - S_{1}}$		$\frac{R_{1} R_{2} R_{3}}{R_{1} R_{2} R_{3} - S_{1} S_{2} S_{3}}$		$\frac{R_{1} R_{3}}{R_{1} R_{3} - S_{1} S_{3}}$
Algebra And Actuated Shift Elements
Brake A				❶						❶
Brake B	Template:Font color Template:Efn	❶	❶
Clutch C			❶	❶	❶	❶	❶
Clutch D							❶	❶	❶	❶
Clutch E		❶			❶				❶
Clutch F	Template:Font color Template:Efn					❶		❶

Template:Notelist

UA 80E/F Failures And Problems

The UA 80E/F family of 8-speed transmissions has had some issues which led to class action lawsuits, a Customer Support Program and numerous technical service bulletins. Starting in 2017, some Highlander and Sienna customers starting complaining of harsh or delayed shifting, delayed acceleration, hesitation, jerking, unintended acceleration, lurching and excessive revving before upshifting.^[19]^[20]

Additional issues arose when 2017 and 2018 Highlander and Sienna customers experienced whining, master warning lights/check engine lights and transmission failures. This prompted Toyota to initiate a Customer Support Program (ZJC). This program covered certain 2017 and early 2018 built Highlanders and Sienna under specific VIN parameters and transmission build dates.^[21] However, this issue has been problematic beyond the scope of the ZJC program. This is causing out of pocket costs for customers outside of the standard 6 yrs./60K mls. powertrain warranty.^[22]

More whine or grind issues have been documented in 2021 Avalon, Camry and Highlanders equipped with the UA 80E/F transmission prompting T-SB-0008-21.^[23]

In December 2024, Gears Magazine published an article which has a more in depth look at some of the UA80's shortcomings. This includes a nut which retains the races that comes loose and allows the transfer gear to move. Another common issue is fluid contamination due to clutch debris from the torque converter. ^[24]

Applications

Longitudinal Engines

Toyota & Lexus: AA 80E

8-speed automatic RWD transmission.

2007–2017 Lexus LS 460
2008–2011 Lexus GS 460
2008–2014 Lexus IS F
2009–2013 Toyota Crown Majesta
2015–present Lexus RC F (3.133 final drive)^[14]
2016–2020 Lexus GS F (2.937 final drive)^[13]
2021–present Lexus IS 500 F Sport Performance (3.133 final drive)^[25]

Toyota & Lexus: AA 80F

8-speed automatic AWD transmission.

Lexus LS 460

Toyota & Lexus: AA 81E

Pairs with Toyota 2GR-FSE and 2GR-FKS V6 engines.

2014–2020 Lexus GS 350 (2.937 final drive)
2014–present Lexus IS 350 RWD (3.133 final drive)
2015–present Lexus RC 350
2013–present Toyota Crown Athlete
2013–2015 Lexus RX 350 F Sport
2016–2022 Lexus RX 350

Aisin TL-80SN

2014–2019 Cadillac CTS (with a 2.85 final drive ratio)

Audi

2010–2015 Q7 1st generation (type 4L) 3.0 L TFSI · 3.6 L FSI · 4.2 L FSI^[16]
2010–2015 Q7 1st generation (type 4L) 3.0 L TDi^[17]
2010–2015 Q7 1st generation (type 4L) 4.2 L TDi^[18]

Hongqi

2019–2023 HS7 1st generationI^[16]
2023–present HS7 2nd generation^[16]

Porsche

2010–2017 Cayenne 2nd generation (type E2 92A) 3.0 L TFSI · 3.6 L FSI · 4.2 L FSI^[16]
2010–2018 Cayenne 2nd generation (type E2 92A) 3.0 L TDi^[17]
2010–2017 Cayenne 2nd generation (type E2 92A) 4.2 TDi · 4.8 L Turbo^[18]
2013–2017 Panamera 1st generation (type G1 970) facelift 3.0 L TDi^[18]

Volkswagen

2010–2018 Touareg 2nd generation (type 7P) 3.0 L TFSI · 3.6 L FSI · 4.2 L FSI^[16]
2010–2018 Touareg 2nd generation (type 7P) 3.0 L TDi^[17]
2010–2015 Touareg 2nd generation (type 7P) 4.2 L TDi^[18]

Transverse Engines

Toyota (UA 80E/F)

2018–present Toyota Avalon (non-hybrid engines)
2018–present Toyota Alphard/Vellfire
2018–present Toyota Camry (non-hybrid engines)
2017–2020 Toyota Sienna
2019–present Toyota RAV4 (non-hybrid)
2020–present Toyota Highlander/Grand Highlander
2024–present Toyota GR Yaris
2025–Toyota GR Corolla^[26]

Lexus (UA 80E/F)

2012–present Lexus RX (V6 AL10 F-Sport, AL20 & AL30 non Hybrids)
2018–present Lexus ES (non-hybrid engines)
2020–present Lexus LM (LM350)
2022–present Lexus NX (non-hybrid engines)
2024–present Lexus LBX (Morizo RR)

Toyota & Lexus (UB 80E/F)

2018–present Toyota Camry 2.5
2019–present Toyota RAV4 2.5
2012–2015 Lexus RX V6 F-Sport North America

Toyota & Lexus (UB 81E/F)

2016–present Lexus RX

BMW/MINI

2015–present BMW 2 Series Active Tourer (F45) and Gran Tourer (F46) with 4-cylinder engines
2016–present BMW X1 (F48) with 4-cylinder engines
2016–present Mini Clubman (F54) with 4-cylinder engines
2016–present Mini Countryman (F60) with 4-cylinder engines (and B38 with AWD)
2018–present Mini Cooper SD (F55/F56) and JCW (F56) due to torque output over 300Nm
2018–present BMW X2 (F39) with 4-cylinder engines
2019–present BMW 1 Series (F40) with 4-cylinder engines
2020–present BMW 2 Series Gran Coupé with 4-cylinder engines

Changan

2019–present Oshan COS1° GT
2019–present Changan CS85
2020–present Changan UNI-K
2021–present Changan UNI-V
2022–present Changan CS75

Chery

2023–present Chery Tiggo 9 (AWD)

Citroën

2017–present Citroën C5 Aircross
2018–present Citroën Grand C4 SpaceTourer
2019–present Citroën Berlingo
2020–present Citroën C4
2021–present Citroën C5 X

DS Automobiles

2018–present DS 7
2019–present DS 3
2020–present DS 9
2021–present DS 4

Exeed

2023–present Exeed Lanyue

Geely

2019–present Xingyue S/Xingyue L^[27]
2020–present Geely Xingrui

GM

2016 Chevrolet Malibu
2017 Buick LaCrosse^[28]
2017–2019 Cadillac XT5^[8]
2018–2020 Buick Regal TourX (I4 AWD only)

Jaguar

2020–present Jaguar E-Pace (1.5t 3-cylinder engines)

Land Rover

2020–present Discovery Sport (1.5t 3-cylinder engines)
2020–present Evoque (1.5t 3-cylinder engines)

Lynk & Co

2017–present 01
2018–present 03
2020–present 05^[29]
2021–present 02
2021–present 09

Mitsubishi

2017–present Mitsubishi Eclipse Cross (diesel engines)
2019–present Mitsubishi Delica (diesel engines)

Opel/Vauxhall

2017–present Opel Insignia
2017–present Opel Grandland X
2018–present Opel Combo
2020–present Opel Corsa
2020–present Opel Mokka
2021–present Opel Astra L Template:Broken anchor

Peugeot

2017–present Peugeot 5008
2017–present Peugeot 308
2019–present Peugeot 3008 1.6 EAT8 & 2.0 EAT8
2018–present Peugeot 508 EAT8
2019–present Peugeot Rifter EAT8
2019–present Peugeot 208
2019–present Peugeot 2008
2022–present Peugeot 408

Polestar

2019–present Polestar 1

Škoda

2018–present Škoda Karoq (Australian market)
2020–present Škoda Octavia (some markets)

Volkswagen/MAN

2017–present Volkswagen Crafter and MAN TGE (transversely mounted engine only)
2018–present Volkswagen Tiguan (US version only)^[30]
2018–present Volkswagen Atlas (US version only)
2018–present Volkswagen Golf (US MK7 & MK8 in some markets)
2019–present Volkswagen Jetta (US version only)
2019–present Volkswagen Arteon (US version only)
2022–Volkswagen Taos (FWD models)^[31]

Volvo (TG-81SC/SD)

2014–2016 Volvo S80 II^[32]
2014–2016 Volvo V70 II^[33]
2014–2016 Volvo XC70 II
2014–2017 Volvo XC60
2015–2018 Volvo S60 II
2015–2018 Volvo V60
2014–present Volvo XC90 II^[34]
2016–present Volvo S90 II^[34]
2016–present Volvo V90 II^[34]
2016–present Volvo V40
2017–present Volvo XC60 II
2017–present Volvo XC40^[35]
2018–present Volvo V60 II^[6]
2018–present Volvo S60 III

References

Template:Reflist

↑ ^1.00 ^1.01 ^1.02 ^1.03 ^1.04 ^1.05 ^1.06 ^1.07 ^1.08 ^1.09 ^1.10 ^1.11 Template:Cite web
↑ ^2.00 ^2.01 ^2.02 ^2.03 ^2.04 ^2.05 ^2.06 ^2.07 ^2.08 ^2.09 ^2.10 Template:Cite web
↑ Template:Cite web
↑ Template:Cite web
↑ Template:Cite tech report
↑ ^6.0 ^6.1 Template:Cite web
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↑ ^8.0 ^8.1 ^8.2 Template:Cite press release
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↑ Template:Cite AV media Template:Cbignore
↑ ^12.0 ^12.1 Template:Cite web
↑ ^13.0 ^13.1 ^13.2 ^13.3 Template:Cite web
↑ ^14.0 ^14.1 ^14.2 ^14.3 Template:Cite web
↑ Template:Cite web
↑ ^16.0 ^16.1 ^16.2 ^16.3 ^16.4 ^16.5 Template:Cite web
↑ ^17.0 ^17.1 ^17.2 ^17.3 Template:Cite web
↑ ^18.0 ^18.1 ^18.2 ^18.3 ^18.4 Template:Cite web
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↑ https://www.toyota.com/grgarage/grcorolla/
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↑ ^34.0 ^34.1 ^34.2 Template:Cite web
↑ Template:Cite web

[longitudinal-1] 1.00 ^1.01 ^1.02 ^1.03 ^1.04 ^1.05 ^1.06 ^1.07 ^1.08 ^1.09 ^1.10 ^1.11 Template:Cite web

[transverse-2] 2.00 ^2.01 ^2.02 ^2.03 ^2.04 ^2.05 ^2.06 ^2.07 ^2.08 ^2.09 ^2.10 Template:Cite web

[3] Template:Cite web

[4] Template:Cite web

[5] Template:Cite tech report

[V60_2_NL_MY19-6] 6.0 ^6.1 Template:Cite web

[7] Template:Cite web

[XT5_F45-8] 8.0 ^8.1 ^8.2 Template:Cite press release

[9] Template:Cite web

[10] Template:Cite web

[11] Template:Cite AV media Template:Cbignore

[Camry-12] 12.0 ^12.1 Template:Cite web

[GSF-13] 13.0 ^13.1 ^13.2 ^13.3 Template:Cite web

[RCF-14] 14.0 ^14.1 ^14.2 ^14.3 Template:Cite web

[15] Template:Cite web

[TR-80SD-16] 16.0 ^16.1 ^16.2 ^16.3 ^16.4 ^16.5 Template:Cite web

[TR-81SD-17] 17.0 ^17.1 ^17.2 ^17.3 Template:Cite web

[TR-82SD-18] 18.0 ^18.1 ^18.2 ^18.3 ^18.4 Template:Cite web

[19] Template:Cite web

[20] Template:Cite web

[21] Template:Cite web

[22] Template:Cite web

[23] Template:Cite web

[24] Template:Cite web

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[26] ttps://www.toyota.com/grgarage/grcorolla/

[27] Template:Cite web

[28] Template:Cite web

[29] Template:Cite web

[30] Template:Cite web

[31] Template:Cite web

[32] Template:Cite web

[33] Template:Cite web

[SAE_SPA_90-34] 34.0 ^34.1 ^34.2 Template:Cite web

[35] Template:Cite web

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