- Audi 80/90 B2/B3 quattro, Audi Quattro, Audi UrQuattro 1981-1987
- Audi 80/90(B3/B4)/100/200/S2/S4 quattro 1987-1994, RS2 1994-1995
- Audi V8 Manual 1988-1994
- Audi V8 Automatic 1988-1994
- Audi A4/A6(C4)/A6(C5)/A8/S4/S6/Allroad quattro 1994-2007, S4/S6 quattro 1994-2005
- Audi RS4 B7 manual/Q7 2005-..., S4 B7 manual 2006-..., A5 2006-..., A6 2006-...(verify), all A4 B8 2007-..., RS6 2008-...
- Audi RS5 (2011-...)
- Audi A4 B9 quattro (2014-...), A5 quattro (2016-...)
- Audi A3/S3 quattro (1998-2003)
- Audi A3/S3 quattro (2003-2008)
- Audi A3/S3 quattro (2009-...)
- Audi TT quattro (1998-2006)
- Audi TT quattro (2006-2009)
- Audi TT quattro (2009-...)
- Audi R8
- Audi Q5
- Audi Q7
- Audi R18 e-tron quattro
Audi 80/90 B2/B3 quattro, Audi Quattro, Audi UrQuattro 1981-1987(Edit)  
First quattro evolution. Full-time all wheel drive with free differentials. Manually locking, pneumatically-activated (by 2 rotating switches, or by a pull knob on the console) rear and center differentials.
Figure: Audi 80 B3 quattro  Figure: Audi 100 C3(?) quattro  Figure: Audi Quattro  Figure: audi quattro  Figure: audi quattro  Figure: audi quattro rally  Figure: quattro I transmission. On the top picture: center differential (5), center differential locking fork shaft (6), differential locking actuator (7)  Figure: audi quattro I  Figure: audi 100 quattro  Figure: Audi 100 quattro rear differential  Figure: Audi 100 quattro rear differential locking mechanism (arrow)  Figure: Audi 100 quattro center differential locking mechanism  Figure: audi 80 quattro b2 transsmision  Figure: audi 80 quattro b2 front differential  Figure: audi 80 quattro b2 front axle  Figure: audi 80 quattro b2 central differential  Figure: audi 80 quattro b2 propeller shaft  Figure: audi 80 quattro b2 rear differential  Figure: audi 80 quattro b2 rear axle  Figure: audi 80 quattro b2 rear differential housing and lock  Figure: audi 80 quattro b2 vacuum lock system   You have better pictures or videos of Audi 80/90 B2/b3 Quattro, Quattro, Urquattro 1981-1987 that you can contribute? Please send them to  !
Audi 80/90(B3/B4)/100/200/S2/S4 quattro 1987-1994, RS2 1994-1995(Edit)
quattro II. Full-time all wheel drive. Torsen center differential with automatic distribution of torque between front and rear axles. Manually activated (electro-pneumatic system) rear locking differential which automatically unlocks when speed exceeds 25 km/h.
Figure: Audi 80 B4 quattro  Figure: audi s2 coupe from 1991  Figure: audi rs2 avant from 1994  Figure: Audi 200 C3 quattro  Figure: Audi 100 C4 quattro  Figure: quattro II transmission with Torsen center differential  Figure: Audi 100 rear differential and differential lock fork(13)  Figure: Audi 100 rear differential locking vacuum pipes  Figure: Audi 80/100/90/200/a4/a6/s4/s6 transmission. 1 - Torsen center differential; 2 - Rear driveshaft output; 3 - Front differential; 4 - Engine input  Audi 80 B3:
Figure: audi 80 quattro b3 front axle  Figure: audi 80 quattro b3 central differential torsen  Figure: audi 80 quattro b3 propeller shaft  Figure: audi 80 quattro b3 rear differential  Figure: audi 80 quattro b3 rear differential lock  Figure: audi 80 quattro b3 rear differential vacuum lock  Figure: audi 80 quattro b3 rear axle  Audi 80 B4:
Figure: audi 80 quattro b4 central differential torsen  Figure: audi 80 quattro b4 propeller shaft  Figure: audi 80 quattro b4 rear differential  Figure: audi 80 quattro b4 rear differential housing and lock  Figure: audi 80 quattro b4 rear differential vacuum lock  Do you own Audi 80/90(B3/b4)/100/200/s2/s4 Quattro 1987-1994, Rs2 1994-1995? Can you please make a photo of the car's 4x4 transmission, switches, dashboard lights, etc. and send it to ? Audi V8 Automatic 1988-1994(Edit)
quattro III - Full-time all wheel drive. Torque distribution via electronically controlled multi-plate hydraulic transfer clutch in the center. Torsen differential in the rear axle. Quattro was for the first time used with automatic transmission. The gearbox was the source for high pressure oil, that was used to activate the clutch.
Figure: audi v8  Figure: audi v8  Figure: audi v8  Figure: audi v8  Figure: audi v8  Do you think this information about Audi V8 Automatic 1988-1994 is incorrect? Please send us what you know to or leave a comment below. Audi A4/A6(C4)/A6(C5)/A8/S4/S6/Allroad quattro 1994-2007, S4/S6 quattro 1994-2005(Edit)
quattro IV - Full-time all wheel drive. Torsen center differential. Electronic traction control (EDL) on front and rear axles that applies brakes to spinning wheels, which has effect of locking front and rear differentials. Works at speeds up to 40 kph (25mph). On more powerful versions S4/S6 - up to 80 kph (50mph). A8 uses EDL and ASR, which reduces engine output. It is almost impossible to lose traction with this system under any circumstances, except if one of the axles is raised in the air. Audi Allroad can feature low range (optional).
Figure: audi a4  Figure: Audi A4 B6 quattro  Figure: audi a8 quattro d2 from 1994  Figure: audi s4 avant b6 from 2003  Figure: audi a6 allroad quattro c6 from 2006  Have you seen a better description of Audi A4/a6(C4)/a6(C5)/a8/s4/s6/allroad Quattro 1994-2007, S4/s6 Quattro 1994-2005 in a paper magazine? Can you please scan it or take a photo and send it to ? Audi RS4 B7 manual/Q7 2005-..., S4 B7 manual 2006-..., A5 2006-..., A6 2006-...(verify), all A4 B8 2007-..., RS6 2008-...(Edit)
quattro V. Full-time all wheel drive. Torsen type III planetary type differential with a 40/60 front/rear split for improved handling.
Figure: audi a4 allroad quattro b8 from 2008  Figure: audi a6 allroad quattro c7 from 2012  Figure: audi a6 quattro c7 from 2011  Figure: audi a4 quattro b8 from 2008  Figure: audi a5 quattro coupe from 2007  Figure: audi a5 quattro coupe from 2007  Figure: audi rs 6 avant c6  Do you think this information about Audi Rs4 B7 Manual/q7 2005-..., S4 B7 Manual 2006-..., A5 2006-..., A6 2006-...(Verify), All A4 B8 2007-..., Rs6 2008-... is incomplete? Please send us what you know to or leave a comment below. Audi RS5 (2011-...)(Edit)
quattro VI. Full-time all wheel drive. Crown gear differential with a 40/60 front/rear split.
Figure: audi rs5 from 2010  Figure: audi rs5 quattro transsmision from 2011  Have you seen a better description of Audi Rs5 (2011-...) on the web? Please send us the link to or post it in a comment below! Audi A3/S3 quattro (2009-...)(Edit)
Haldex Generation IV automatic all wheel drive.
Figure: audi s3 second generation 2006 2012 .jpg "audi s3 second generation 2006 2012") Have you seen a better description of Audi A3/s3 Quattro (2009-...) in a paper magazine? Can you please scan it or take a photo and send it to ? Audi TT quattro (2009-...)(Edit)
Haldex Generation IV automatic all wheel drive.
Figure: Audi TT quattro with Haldex Generation IV(?????)  Figure: Audi TT quattro with Haldex Generation IV(?????)  Do you own Audi Tt Quattro (2009-...)? Can you please make a photo of the car's 4x4 transmission, switches, dashboard lights, etc. and send it to ? Audi R8(Edit)
Normally rear wheel drive vehicle. Front alxle is driven via a viscous coupling that is installed in the front axle housing. 15% of torque is transferred to the front axle in normal conditons, and up to 30% when rear wheels slip.
Figure: Audi R8  Figure: Audi R8  Have you seen a better description of Audi R8 on the web? Please send us the link to or post it in a comment below! Audi Q5(Edit)
Full-time all wheel drive. Torsen centre differential.
Source:
Figure: audi q5 transsmision from 2008  You have better pictures or videos of Audi Q5 that you can contribute? Please send them to !
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