volvo

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All Wheel Drive: all wheel drive explained, differential, electronic differential lock (EDL), haldex, jeep 4wd systems, low range, proactive AWD, quattro evolutions, safety concerns, terrain response system, testdrive, Torque-vectoring AWD, torque split ratio, torsen, viscous coupling

Brands: 4motion, quattro, super select, xDrive

Videos: Diagonal spin test, electronic differential lock test, quattro vs. xdrive test, Viscous Coupling Test

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Recent changes


Last changed: 2021/01/01 00:00
850 AWD Next Automatic all wheel drive, torque transfer to rear axle via viscous coupling when front wheels slip, electronic traction control on front wheels, limited slip rear differential. Figure: volvo 850 awd (175KB) Figure: Volvo 850 viscous coupling and disconnect unit (a freewheel) (41KB) Figure: volvo 850 transmission (788KB) Do you think this information about Volvo 850 Awd is incorrect? Please send us what you know to or leave a comment below. S60 AWD (2002) Next Haldex Generation I automatic all wheel drive. Figure: volvo s60r first generation (382KB) Have you seen a better description of Volvo S60 Awd (2002) on the web? Please send us the link to or post it in a comment below!

Volvo S60 AWD (2003-...), Volvo V70 AWD (2003-...), Volvo XC 70 (2003-...), Volvo S60R AWD, Volvo V70R AWD Next Haldex Generation II automatic all wheel drive. In the US Volvo S60R and V70R was updated from Haldex II to Haldex III for the 2006 model year. Have you seen a better description of Volvo S60 Awd (2003-...), V70 Awd (2003-...), Xc 70 (2003-...), S60R Awd, V70R Awd on the web? Please send us the link to or post it in a comment below! V70 AWD (1997-2002), V70 Cross Country (2000-2002), XC70 (2002) Next Automatic all wheel drive, torque transfer to rear axle via viscous coupling when front wheels slip, electronic traction control on front wheels (TRACS - Volvo's brand of traction control). TRACS system works on speeds up to 40kph(25mph). Have you seen a better description of Volvo V70 Awd (1997-2002), V70 Cross Country (2000-2002), Xc70 (2002) in a paper magazine? Can you please scan it or take a photo and send it to ? XC 90 (2002-2020) Top Haldex Generation II automatic all wheel drive. Figure: volvo xc90 awd (162KB) All Volvos have Haldex Gen III since 2006(?) Figure: volvo s60 (25KB) Do you think this information about Volvo Xc 90 (2002-2020) is incomplete? Please send us what you know to or leave a comment below.
Last changed: 2021/01/01 00:00

There are 14 comments

Sam

October 28, 2015 - 22:00

What would be wrong if AWD does not engage, especially the rear wheels?

Reply to Sam

David

February 03, 2021 - 14:21

I don't think my old Volvo's awd is working how do I check?

Tostik

February 02, 2013 - 22:01

The Volvos really shine in this long video comparing many different AWD and Traction Control systems.

youtu.be/tpp5tW71qYI

Tostik

December 21, 2012 - 19:09

Just found out the 1997 AWD 850 (not sold in the US), and the 1998-2000 V70XC have Eaton rear locking differentials. All these models have the VC AWD systems. This locking diff is more effective than the ABS based traction control (with open diffs) on the more recent model Volvos.

Reply to Tostik

Cris

January 24, 2016 - 18:47

Which Volvos on the European Market have a diff lock? Do later haldex systems come with lsd? I ve been told that the early volvo awd on 850 awd and v70 system has more power transferred to the back wheels as opposed to later ones, before they switched to haldex.

Tostik

October 06, 2012 - 00:42

Volvo calls Haldex 3 & 4 Instant Traction, because it will activate the rear wheels with just 15 degrees (1/24th) of a front wheel spin. And it sends 60 ft-lbs of pre-charged torque to the rear wheels instantaneously. This is an improvement over Haldex 2 which will send torque more gradually to the rear wheels after 1/7th (51 degrees) of a front wheel spin.

Joel

March 01, 2010 - 20:20

disconnect unit

The 'disconnect' unit is a 'freewheel':
http://en.wikipedia.org/wiki/Freewheel

Reply to Joel

awdwiki.com

March 21, 2010 - 12:01

Thanks

George

January 11, 2010 - 00:42

Haldex iterations

In the US, the Volvo S60R (and V70R) was updated from Haldex 2.0 to Haldex 3.0 for the 2006 model year.
www.haldex.com

www.haldex.com

Reply to George

Tostik

October 05, 2012 - 22:02

And the 2006 XC90 went to Haldex 3rd gen also. 4th gen in 2009.

Butt

January 08, 2010 - 02:18

...

Very useful !! Thank you.

AWD

September 14, 2009 - 11:12

Opel/ Vauxhall Calibra/Vectra A

www.cavalierturbo.com

Zilesio

February 21, 2009 - 14:01

Mazda 323 GT Turbo 4WD

You forgot the Mazda 323 1.6 GT Turbo 4WD! (and/or 1.8 GTX)

We are again on a full-time AWD System with planetary gear center differential to split engine torque, electrically lockable via a button on the console that would have activated a Viscous Coupling unit.

Before 1990:
- Normal torque split 50/50
- 185/60R14 performance tires on 5.5J-14 alloy wheels

From 1990:
- Normal torque split of 43/57 (for a rear-wheel-drive feel) could be varied to 60/40
-195 / 60R-14 performance tires

Reply to Zilesio

awdwiki.com

February 21, 2009 - 19:05

Re: Mazda 323 GT Turbo 4WD

Yep, thanks for the info. Mazda 6 MPS is coming soon too.