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Audi 80/90 B2/B3 quattro, Audi Quattro, Audi UrQuattro 1981-1987

First quattro evolution. Full-time all wheel drive with free differential. Manually locking, pneumatically-activated (by 2 rotating switches, or by a pull knob on the console) rear and center differential.

Figure: Audi 80 B3 quattro
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Figure: Audi 100 C3(?) quattro
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Figure: Audi Quattro
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Figure: audi quattro
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Figure: audi quattro
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Figure: audi quattro rally
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Figure: quattro I transmission. On the top picture: center differential (5), center differential locking fork shaft (6), differential locking actuator (7)
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Figure: audi quattro I
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Figure: audi 100 quattro
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Figure: Audi 100 quattro rear differential
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Figure: Audi 100 quattro rear differential locking mechanism (arrow)
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Figure: Audi 100 quattro center differential locking mechanism
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Figure: audi 80 quattro b2 transsmision
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Figure: audi 80 quattro b2 front differential
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Figure: audi 80 quattro b2 front axle
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Figure: audi 80 quattro b2 central differential
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Figure: audi 80 quattro b2 propeller shaft
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Figure: audi 80 quattro b2 rear differential
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Figure: audi 80 quattro b2 rear axle
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Figure: audi 80 quattro b2 rear differential housing and lock
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Figure: audi 80 quattro b2 vacuum lock system
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Pin Have you seen a better description of Audi 80/90 B2/B3 Quattro, Quattro, Urquattro 1981-1987 on the web? Please send us the link to or post it in a comment below!

Audi 80/90(B3/B4)/100/200/S2/S4 quattro 1987-1994, RS2 1994-1995

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
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Figure: audi s2 coupe from 1991
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Figure: audi rs2 avant from 1994
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Figure: Audi 200 C3 quattro
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Figure: Audi 100 C4 quattro
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Figure: quattro II transmission with Torsen center differential
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Figure: Audi 100 rear differential and differential lock fork(13)
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Figure: Audi 100 rear differential locking vacuum pipes
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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
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Audi 80 B3:

Figure: audi 80 quattro b3 front axle
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Figure: audi 80 quattro b3 central differential torsen
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Figure: audi 80 quattro b3 propeller shaft
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Figure: audi 80 quattro b3 rear differential
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Figure: audi 80 quattro b3 rear differential lock
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Figure: audi 80 quattro b3 rear differential vacuum lock
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Figure: audi 80 quattro b3 rear axle
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Audi 80 B4:

Figure: audi 80 quattro b4 central differential torsen
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Figure: audi 80 quattro b4 propeller shaft
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Figure: audi 80 quattro b4 rear differential
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Figure: audi 80 quattro b4 rear differential housing and lock
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Figure: audi 80 quattro b4 rear differential vacuum lock
audi-80-quattro-b4-rear-differential-vacuum-lock

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Audi V8 Manual 1988-1994

quattro II - Full-time all wheel drive. Torsen center differential, Torsen rear differential, free front differential.

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Audi V8 Automatic 1988-1994

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
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Figure: audi v8
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Figure: audi v8
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Figure: audi v8
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Figure: audi v8
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Audi A4/A6(C4)/A6(C5)/A8/S4/S6/Allroad quattro 1994-2007, S4/S6 quattro 1994-2005

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 differential. 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
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Figure: Audi A4 B6 quattro
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Figure: audi a8 quattro d2 from 1994
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Figure: audi s4 avant b6 from 2003
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Figure: audi a6 allroad quattro c6 from 2006
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Pin Do you own Audi A4/A6(C4)/A6(C5)/A8/S4/S6/Allroad Quattro 1994-2007, S4/S6 Quattro 1994-2005? Can you please make a photo of the car's 4x4 transmission, switches, dashboard lights, etc. 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-...

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
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Figure: audi a6 allroad quattro c7 from 2012
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Figure: audi a6 quattro c7 from 2011
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Figure: audi a4 quattro b8 from 2008
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Figure: audi a5 quattro coupe from 2007
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Figure: audi a5 quattro coupe from 2007
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Figure: audi rs 6 avant c6
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Audi RS5 (2011-...)

quattro VI. Full-time all wheel drive. Crown gear differential with a 40/60 front/rear split.

Figure: audi rs5 from 2010
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Figure: audi rs5 quattro transsmision from 2011
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Audi A4 B9 quattro (2014-...), A5 quattro (2016-...)

quattro VII. Automatic all wheel drive allegedly called e-quattro. The e-quattro system would allegedly use a pair of electric motors with a combined output of 136 horsepower to drive the rear wheels, while the internal-combustion engine would supply power to the front wheels only.

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Audi A3/S3 quattro (1998-2003)

Haldex Generation I automatic all wheel drive system - electronically controlled Haldex multi-plate hydraulic clutch, located near the rear differential. Normally front wheel drive vehicle. It detects the need of all wheel drive at 1/8 of the wheel spin and transfers up to 100% of torque to the rear axle.

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Audi A3/S3 quattro (2003-2008)

Haldex Generation II automatic all wheel drive.

Figure: audi a3 2005 rear differential
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Figure: audi a3 2005 rear differential
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Figure: audi a3 2005 haldex coupling disassembly
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Audi A3/S3 quattro (2009-...)

Haldex Generation IV automatic all wheel drive.

Figure: audi s3 second generation 2006 2012
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Figure: audi a3 2010 haldex coupling disassembly
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Figure: audi a3 2010 rear differential housing
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Audi TT quattro (1998-2006)

Haldex Generation I automatic all wheel drive. Haldex Generation II automatic all wheel drive since 2002.

Figure: audi tt mk1 transsmision
audi-tt-mk1-transsmision

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Audi TT quattro (2006-2009)

Haldex Generation II automatic all wheel drive.

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Audi TT quattro (2009-...)

Haldex Generation IV automatic all wheel drive.

Figure: Audi TT quattro with Haldex Generation IV(?????)
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Figure: Audi TT quattro with Haldex Generation IV(?????)
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Audi R8

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
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Figure: Audi R8
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Audi Q5

Full-time all wheel drive. Torsen centre differential.

Source:

Figure: audi q5 transsmision from 2008
audi-q5-transsmision-from-2008

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Audi Q7

Full-time all wheel drive. Torsen centre differential.

Source 1:

Source 2:

See also: quattro evolutions

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Audi R18 e-tron quattro

Figure: audi r18 e tron quattro
audi-r18-e-tron-quattro

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This is a Wiki, so feel free to correct any factual or grammatical error. Test here before posting.

1-15 of 22 Comments
kliff andreus
January 09, 2017 - 21:58

i like it very very

Quentin Raffensperger
March 15, 2015 - 23:07

With winter/snow tires, will the Audi R8 be ok in a little snow/slush since it has AWD? I know it sits real low but if snow has been salted or recently plowed I imagine it can handle and brake fine as long as snow tires are on? Any reply is appreciated.

Quentin R.
Toronto, Ontario, Canada.

sticky8
January 18, 2015 - 09:22

I absolutely love my A8 4.2 Quattro, bloody awesome, it's like driving a Porsche. It accelerates like a rocket, stops on a dime, can be pushed to the bend like a 911. It's quattro system has been described as best of 4wd. I just wonder why their 4wd is better, since Bimmer and Mercedes has 4wd offering too. I was told that Audi deliberately place their longitude engines more up front to allow them to build a better 4wd and because the weight distribution is more heavy up front, Audi will not oversteer in snow and more controllable. is that the real reason that Quattro is better

Reply to sticky8
Alexander
March 12, 2015 - 17:07

The torsen system is permanent, but can distribute power between axels depending on traction. I haven't seen any tests indicating superiority of one system over the other, and Audi has moved their engine towards the rear of the engine compartment on more recent models as the old cars are infamous for their tendency to under-steer. The torsen system requires the engine to be mounted longitudinally, and the system requires more space than systems used by e.g. Ford (Sierra Cosworth) or BMW.With modern ESP systems even my rear wheel drive 3-series feels safe on snowy roads. Recent Audis and BMW distribute power 60/40 (rear/front), this seems to be the preferred set-up for cars to handle well and balanced.

Alan_T
December 24, 2012 - 17:01

I am very glad for my 2009 B8

Ant
June 16, 2012 - 23:04

Will it be possible for me to use an Audi A4 quattro 2,5 V6 diesel engine and tiptronic gearbox in the mid engined car that I am building? I am concerned about the rear drive not being connected to anything. I will obviously remove the propshaft. Will everything work with the rear propshaft removed?

Ant
June 16, 2012 - 23:01

Will it be possible for me to use an Audi A4 quattro 2,5 V6 diesel engine and tiptronic gearbox in the mid engined car that I am building? I am concerned about the rear drive not being connected to anything. I will obviously remove the propshaft. Will everything work with the rear propshaft removed?

Reply to Ant
KillerRaccoon
June 15, 2014 - 05:52

Absolutely. I'm not too familiar with what kind of center diff it has, and CBF to look it up in this wiki, but if you weld the center diff (a common mod to do to the rear diff for drift cars) then it will work just fine. The welded diff makes it so the front and rear outputs always spin at the same rate, meaning it will work for your purposes.

Ant Borain
June 16, 2012 - 21:01

I am building a mid engined vehicle and would like to use an audi A4 2.5 TDI V6 diesel motor and tiptronic box. Could I use this combo with the drive to the rear wheels disconnected?

labi
February 24, 2012 - 01:05

I have a 01 audi a6 4.2 and the car starts normal but when you put it in d or R or any others gears the car does not move at all ... if i press the gas above 1000 rpm while in D the car goes in limp mode sometimes it tries to move like a step and something locks it up.... even if i lift the car up i can try to drive it on the air with only 3 wheels spining but it does not have a lot of power.....if someone could help i would really appreciate, and also when i used the vag com it said TC OPEN... please help

awdwiki.com
January 25, 2012 - 01:06

It is absolutely unbelievable, but Audi themselves state on their web site that Audi A3 has quattro® permanent all-wheel drive system utilizing Haldex center differential.
It can't be permanent. Maybe this is now just a marketing term, not a design description - but Haldex is NOT a differential! Saying this is just lame.

Reply to awdwiki.com
crd
December 23, 2013 - 16:38

It isn't lame. The Haldex is a clutch-pack, but acts like a differential to some degree. It is permanent and full-time. With Haldex 4, the torque split on the S and RS models is about 70/30 but changes constantly based on gas pedal actuation, wheel slip, wheel speed, and more. When slip is present the car can be rear biased, but and can do a max of 50/50 torque dist. when NO slip is present.

Not a bad system at all.

Reply to awdwiki.com
awdwiki.com
December 23, 2013 - 18:32

Try googling for "differential". Haldex is not a differential, no matter how it is programmed to work or how good it is.

Reply to awdwiki.com
crd
February 17, 2014 - 12:09

No one said it was a differential. The terminology was "acts like" a diff. It is positioned between the axles and plays the same role: to direct torque as needed.

Gen 4 and 5 Haldex can lock the clutch pack preemptively for a 50/50 split (meaning it acts like a diff here with a fixed distribution when it needs to), additional torque is then directed to whatever axle has more grip in slip conditions, meaning it can be rear biased on slip -- this is identical to what Torsen with a 50/50 static layout does with slip present, only that Torsen always runs at 50/50 until slip is detected, which is not really optimal, as you don't need 50/50 when driving straight at a constant speed.

Giedrius S4
January 19, 2011 - 21:26
audi c4 S4

yoi love my car

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