The previous powertrain choices are gone for 2026, but what remains is compelling. The last engine standing is a turbocharged 3.0-litre V6, connected to a seven-speed dual-clutch transmission and standard quattro all-wheel drive (AWD).
This is the same engine used in the S5 sedan, and it makes the same 362 horsepower and 406 pound-feet of torque here. That’s 27 hp and 37 lb-ft of torque more than the more powerful of the two powertrain options for the 2025 A6. Despite its larger size, the A6 also weighs about the same as the S5 (not sure what that says about the latter), so it’s only 0.2 seconds slower from zero to 100 km/h. And the A6’s 4.8-second time is much quicker than a base BMW 5 Series or Mercedes E-Class can manage, as both come standard with less-powerful turbo-four-cylinder engines.
The amount of power on tap makes the A6 feel as energetic as one would expect of a sporty luxury sedan—if you can access it. There is a notable hesitation from the transmission when accelerating from a stop under heavy throttle, something we also noticed in the A5. Once up to speed, shifts are at least fairly smooth, which isn’t a given with dual-clutch gearboxes.
The more powerful V6 helps to make up for the lack of a dedicated S6 model at launch, as do a number of chassis enhancements. Brake-based torque vectoring is standard, while the Sport Plus package for the top A6 Technik trim level includes Audi’s sport rear differential. Previously reserved for Audi S and RS models, it applies more torque to the outside wheel when cornering to keep understeer in check. But while we were impressed by the A6’s overall handling neutrality, the sport differential only made a difference when we really pushed it.
The Sport Plus package also includes steel-spring suspension that gives the A6 a 1.7-centimetre lower ride height. That provides sportier handling, but it comes without the bandwidth for comfort afforded by the adaptive air suspension that’s standard on Technik models without this package. We felt the degradation in ride quality was much greater than the improvement in handling.
Also part of the Sport Plus package is rear-axle steering that decreases the turning circle by up to a metre flat at lower speeds and increases stability at higher speeds, according to Audi. All models have a progressive steering rack that becomes more responsive at higher steering angles to make the A6 feel nimbler and slows down at higher speeds to provide autobahn-worthy stability.
The base steering system provides excellent precision, albeit with a bit too much artificial heft when switching from the default Balanced drive mode to Dynamic. The third Comfort mode made little discernible difference in behaviour, and the same is true of the various enhancements of the Sport Plus package when taken together. The A6 is a very stable and composed car, but it’s definitely better suited to highway blasts than canyon carving. And even while cruising, the amount of tire noise on anything less than autobahn-smooth pavement is decidedly un-premium.