Aisin–Toyota 8-speed automatic transmission. Aisin and Toyota offer various 8-speed automatic transmissions for use in both longitudinal and transverse engine vehicles, based on a common, globally patented gearset concept.

The Aisin TL-80SN (Toyota AA 80E/AA 80F/AA 81E) series is the world's first 8-speed automatic transmission for passenger cars. It is designed for longitudinal engines 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 variant 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.

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 applications. It is also called EAT8 (PSA), GA 8F 22AW (BMW/Mini), TG-81SC (Volvo), AF50-8 (Opel/Vauxhall), AW F8 F45 (Cadillac), and AQ 450 (Volkswagen Group). 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". 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 .

Specifications

Layout (Gearset Concept) 

All 8-speed automatic transmissions from Aisin and Toyota for passenger cars are based on the same layout in both engines orientations. For transverse installation, the layout of the longitudinal installation was merely mirrored. 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  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 and R2  

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  In some data sheets, the gear ratio of R2 is given, presumably a careless error.

The direction is reversed in gearset 3, the outer one of the Ravigneaux gearset. In the fast reverse gear R2, this part of the Ravigneaux gearset is directly connected to the input (turbine) side. 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. Therefore, the gear step between the two reverse gears reflects the ratio of the 3rd gear.

Ratios

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.

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. 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.

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.

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)
 2016–2020 Lexus GS F (2.937 final drive)
 2021–present Lexus IS 500 F Sport Performance (3.133 final drive)

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

Toyota & Lexus: AE 80F 

 2015–present Lexus LX 570
 2015–2021 Land Cruiser 5.7 L
 2015–present Mitsubishi Pajero Sport

Toyota & Lexus: AL 80E 

 2023–present Tacoma 2.4 L Turbo 2WD

Toyota & Lexus: AL 80F 

 2023–present Tacoma 2.4 L Turbo 4WD

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
 2010–2015 Q7 1st generation (type 4L) 3.0 L TDi
 2010–2015 Q7 1st generation (type 4L) 4.2 L TDi

Hongqi

 2019–2023 HS7 1st generationI
 2023–present HS7 2nd generation

Porsche 

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

Volkswagen 

 2010–2018 Touareg 2nd generation (type 7P) 3.0 L TFSI · 3.6 L FSI · 4.2 L FSI
 2010–2018 Touareg 2nd generation (type 7P) 3.0 L TDi
 2010–2015 Touareg 2nd generation (type 7P) 4.2 L TDi

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

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
 2020–present Geely Xingrui

GM 

 2016 Chevrolet Malibu
 2017 Buick LaCrosse
 2017–2019 Cadillac XT5
 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
 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

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)
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)

Volvo (TG-81SC/SD) 

 2014–2016 Volvo S80 II
 2014–2016 Volvo V70 II
 2014–2016 Volvo XC70 II
 2014–2017 Volvo XC60
 2015–2018 Volvo S60 II
 2015–2018 Volvo V60
 2014–present Volvo XC90 II
 2016–present Volvo S90 II
 2016–present Volvo V90 II
 2016–present Volvo V40
 2017–present Volvo XC60 II
 2017–present Volvo XC40
 2018–present Volvo V60 II
 2018–present Volvo S60 III

See also 

 List of Aisin transmissions
 List of Toyota transmissions
 Toyota A transmission
 Toyota U transmission

References 

Aisin transmissions