
Q7 uses a Torsen differential. The Q7 shares the same four-wheel drive structure as the Q5, both featuring a full-time four-wheel drive system primarily based on the Torsen central differential structure. Advantages of on-demand four-wheel drive: It is suitable for models with a front transverse engine and front-wheel drive platform, enabling many SUVs or four-wheel drive sedans built on this platform to be equipped with a four-wheel drive system. Compared to rear-wheel drive platforms, front-wheel drive platforms are more conducive to expanding interior space, offer higher transmission efficiency, and produce less noise from the transmission system. Disadvantages of on-demand four-wheel drive: Most on-demand four-wheel drive systems are limited by structural flaws when transferring power between the front and rear axles, making it impossible to deliver more than 50% of the power to the rear axle.

The new Q7's four-wheel drive system no longer uses the Torsen differential. In recent years, Audi has upgraded its quattro technology, shifting to a system called quattro ultra, which primarily uses a multi-plate clutch to control power distribution. The previous Torsen system was purely mechanical, relatively heavy, and not ideal in terms of fuel consumption and response speed. The current ultra system can intelligently adjust torque distribution between the front and rear axles. For example, it switches to front-wheel drive during high-speed cruising, saving a significant amount of fuel, and responds instantly on slippery roads to ensure grip and safety. All Q7 models from 2023 onwards are equipped with this system. While it may lack some of the mechanical purity, it is lighter, more efficient, and suitable for daily urban use and occasional off-roading. The difference in daily use is minimal, but it's worth noting the long-term cost-saving benefits from improved fuel efficiency.

As someone who has driven both the old and new models, I'm quite aware that the new Q7's four-wheel drive no longer uses the Torsen system. Audi has switched to the quattro ultra system, replacing the old Torsen with a multi-plate clutch. The driving experience hasn't suffered much, with smooth starts and better fuel efficiency. On highways, it can switch to front-wheel drive mode for cruising. I've tested it several times in snow, and the grip is still excellent, though I feel the torque control is more precise. Maintenance is a bit lighter with fewer components and less mechanical wear. A minor drawback might be occasional slight noise, but overall reliability is high, making it suitable for those who prioritize economy. The Q7 performs well overall, and the four-wheel drive update is a smart move that aligns with modern needs.

The new Q7's four-wheel drive has been updated—no more Torsen! Audi now uses the quattro ultra technology, which intelligently distributes power via a multi-plate clutch. It's more fuel-efficient and stable, performing just as well in rain or snow. Similar to BMW's xDrive but tuned better by Audi. Off-road capability is slightly reduced but still sufficient, with added tech appeal—great for daily driving.

Having driven for many years, I can confirm the new Q7's AWD is no longer Torsen-based, but has switched to the electronically controlled ultra quattro. It offers faster torque distribution, better agility in corners, and slightly improved fuel efficiency. Tested on highways and muddy roads, the road feel differs but safety remains strong. has made significant progress—practical and reliable, definitely worth a try.

For ordinary families like ours, the new Q7's four-wheel drive no longer uses the Torsen system. Instead, it adopts the ultra technology, which is lighter, more fuel-efficient, and saves money for daily driving. It remains stable and safe in rainy or snowy conditions without compromising safety. Maintenance is convenient, parts are easy to find, and the spacious interior makes it the top choice for family trips. It's more practical and thoughtful with its updates.


