Haldex vs Torsen - 4Motion vs Quattro - VW Tiguan vs Audi Q5 - test on rollers

Volkswagen Tiguan 2.0 TSI DSG 4MOTION vs Audi Q5 2.0TDI S-tronic Quattro - test on rollers

#vwtiguan #audiq5 #duszaniespokojna

[peterm]

So much wrong information and arguments here in the comments, that's sad.
There are 2 different systems for AWD used in Volkswagen Group cars.
Knowing which type is in which car is simple, it only depends on how the engine is mounted:

Is the engine mounted transversely => front-based AWD system with hydraulic clutch that shuts when the front wheels slip. This clutch type AWD system comes from a company called Haldex and is used by some other car makers also. Regular driving is by propelling only the front wheels. When one or two slip, ABS wheel speed sensors notice that, shut the clutch and up to 50% go to the rear wheels when the clutch is shut completely.
Front and rear differantial is of an open diff type. Distribution 95:5 (little drag in the clutch, therefore always 5% to the rear) up to 50:50.
To get the distribution active, wheel speed sensors have to read a difference in wheel speed between front and rear axle and then activate the hydraulic clutch.
Early models with Haldex Gen. 1 clutch (Golf 4, Seat Leon 1, Audi A3 1st gen) needed a for the driver noticeable slip in the front to kick in. Always front wheels slip and then after a short moment force is sent to the rear also. Newer Haldex Generation reacts more quickly.

Is the engine mounted longitudinally => permanent 50/50 AWD system with mechanical torsen center differential. When the front or rear wheels spin, force is distributed to the other axle mechanically. To kick in, there has to be a wheel speed difference between front and rear axle for the mechanical torsen diff to transfer the force to the other axle. So for this AWD system you need to be a bit harsh when stuck to have enough slippage on one axle. But driving is more predictable because it's always permanent AWD. Also in this type it is possible to send more power to the rear than to the front. So drifting is rather possible with this system (and enough power). Distribution 50:50 to 30:70 or 70:30 BOTH possible (not sure about the exact numbers).
Front and rear differantials are open diffs.

Both systems can be found in Audi and VW cars, even Seats, Porsches and Bentleys.
The original Audis (before A3 came) had always longitudinally mounted engines and the second type of AWD, the mechanical one with torsen diff and 50:50 permanent base-distribution, so this system is mostly referred to when "Quattro" is mentioned. Other cars of VW-Group with "Quattro": Only Passat with engine longitudinally (3B/3BG, 4Motion emblem on the trunk), Touareg, Porsche Cayenne, Bentleys, Seat Exeo, Audi A4 to A8, Q5 and Q7 and of course the old Audi Quattros, Audi 80 Quattro, Audi 100 or 200 Quattro, ...

4Motion was first introduced in Golf 4 and this clutch-type system is also used in all Audi A3, A1, Q2, Q3, TT, VW Tiguan, Golf, Passat with engine transversely, the new big VW SUV for US market, Seat Leon, Ateca, Skoda Octavia, ... So it is possible to have an Audi (S3 or TT-RS for example) with Quattro emblem on it but using an other AWD system than it's bigger brothers who are "real" Audis. Also you have 4Motion sign on Passat 3B/3BG but with the Quattro system underneath. Always depending on how the engine is mounted.

In older cars the mechanical Audi Quattro system with torsen center diff mostly outperforms other systems because it's mechanical and reacts constantly. In newer cars, advanced electronics help those not-true AWD systems to become better and better, as you see in the video here.
In my opinion, best AWD system for street car is one with 3 mechanical torsen diffs. One in the middle like Audi Quattro system has, also one in the front axle and one in the rear. As far as I know Subaru used this system in older AWD cars like the old Imprezas and Legacys. So an old Audi with Quattro performs very well in bad grip conditions (like you all have seen in many videos) but old Subarus have an even better AWD system. No wonder, since they were used in Rallye.

[Obywatel_RPP]

Brakuje obrazka z wybranego trybu na początku testu tiguana, dopiero pozniej sie pojawia. Nie wiedzialem w ktorym trybie jest ustawiony naped. Dzieki za test. Zdecydowanie znakomicie wykonane i zaznaczone ktore osie miały podlozone rolki. Brakuje takich montazow na youtube. Niektorzy to robia niedbale. Dzieki jeszcze raz.

[iDrivefun]

I had a 1997 Audi A4 Quattro. Manual, 2.8. Was amazing in bad weather. And was a drifting rally beast in the snow and on dirt roads. I miss it.

[timmyboi]

People, if you are in a situation where you are already stuck (eg. 2-3 wheels spinning and no forward movement), a little lifehack you can always try with a 4WD or AWD car is to put it in gear (put foot off the clutch, apply a bit throttle and then press simultaneously (lightly at first) on the brakes. This will slow the spinning wheel and allows the standing wheel to try.
It is usually done by the ASR for you, but for exaple my toyota hilux does not have it. It saved me quite often, especially when pulling other vehicles out of the snow.

[jpch]

Hopefully Quattro with Ultra is better on rollers. There is no denying that in deep snow or rough terrain Torsen is great, but most people need AWD on crossovers for slippery and light conditions. Haldex as usual is underrated, yet reacts faster than most systems, and outperforms many including torsen, Good job 4Motion.

[moominjuice]

One of the main differences is the Torsen is pretty much service/maintenance free... no oil changes or software failures or knackered clutches 😁

[badandylaoc]

Excellent information if I encounter some rollers in the wild.

[LIFEINSPEED]

Straight to the point on evry video that's why I love this channel

[odgie]

Tiguan driver, is about as smooth as sand paper.

[Endzeit]

[very impressive...both cars have the same problem with the last task. both front wheels and One back wheel on the roller plates. now I´m feeling very good, as I have only 4-motion (gen.4) and couldnt afford a quattro ;-) spacibo friends and thanks for the cool demonstration.]

[jirace]

The Tiguan has a transverse engine and is FWD dominant. The Q5 has a longitudinal engine and is RWD dominant. The two systems are different but equal to the same setups across brands; ie, the Tiguan and Q3 use the same system/layout yet one has quattro and one 4motion.

[joenissan]

Both systems have to either be the same or are quite similar since they performed almost identical.

[ericmichel]

So from this test it seems there is little to no advantage to the more expensive and complex Audi Quattro system compared to the much cheaper and less complex VW Haldex system. Perhaps it is worth it in the sport models where you can have more torque to the rear? But even there it seems like only the R8 has a system that allows it really drive the rear wheels. All the other S and RS versions seem to primarily under steer just like the cheaper VW Haldex cars. Am I wrong? I have never seen a RS5, RS6 or any other Audi (other than the R8) breaking the rear end loose under power and all the reviews complain about unrelenting under steer.
So it doesn't seem to help with low speed traction for SUV's and in most cases doesn't help for sport driving. Seems like they would be better off just using the cheaper and less complex Haldex system in most cases.

[lancercool]

looks like these 2 cars performed pretty much the same.. what am i missing?

[busslayer]

I was almost at the end and then started to wonder when they were going to show the other car.

[ale]

So at 2:42 Tiguan failed the test? Would it be different if snow option was selected? Or maybe esp off?

[Сончинчон]

Все ясно и понятно, спасибо за обзор ❤

[natebrooks]

So after reading a book of comments, which one was better, the car that jumped off of the rollers first correct

[Addison]

Looks like the only real difference is the torsen has some sort of lsd in the rear, shown towards the end. There are so many different configurations with both depending on the car that these two seem pretty equal. Torsen can come with lsd rear differential and sometimes Haldex comes with torque vectoring. Somtimes they both have open diffs. It would be better to show the difference by getting all four wheels on ice and slow motion to show how the wheels engage/disengage power depending on traction, but really both of the systems are going to work for pretty much anyone. On track the Haldex system might act funny and in the snow it might tend to understeer more as it can't put as much power to the rear wheels.

[dimaol]

Предохранитель в тигуан поставьте пожалуйста обратно. Так как я ездил на haldex и в первом ролике видно что задний мост сразу включён. Сначала должны были передние чуть прокрутиться потом тоько включается haldex.