A6 vs 7 Series
The A6 and the 7 Series are two different answers to the same midsize luxury car brief, each with its own set of priorities. The spec sheets tilt toward the 7 Series, which leads in 2 of 4 areas and opens its biggest gap on engine & performance.
At a glance
- Engine & Performance 7 Series wins
- Fuel Economy & Range 7 Series wins
- Space & Practicality Tie
- Off-road & Towing Tie
- Engine & Performance0.2
- Fuel Economy & Range4.0
- Engine & Performance4.0
- Fuel Economy & Range4.7
Spec scores (0 to 10) are calculated from manufacturer specs against other models in the same class. See how the formula works. They are not reviews or user ratings.
Key Differences
-
The 7 Series has 114 hp more power
Here the 7 Series pulls well ahead of the A6, with 375 hp compared to 261 hp. More power helps with merging, overtaking and climbing hills, especially with passengers and luggage on board.
-
The 7 Series has 110 lb-ft more torque
The 7 Series doesn’t just edge this one; 383 lb-ft against 273 lb-ft is a lead you’ll feel. More torque means stronger pulling from low speeds, which you feel when accelerating from a stop or climbing grades.
-
The 7 Series has better fuel economy
Small gaps can still matter over time, and here the 7 Series leads 28 mpg to 26 mpg. Official figures rarely match real-world driving exactly, but the ranking between two cars tends to hold.
Design & Size
Engine & Performance
7 Series leads
The 7 Series dominates the engine & performance section, and the gaps are large enough to matter in daily use. The 7 Series delivers 114 hp more power. The 7 Series’s extra output gives it more in reserve when you need to get up to speed. If engine & performance is your priority, the 7 Series is the car to pick.
Total system output
A6: 261 hp 7 Series: 375 hp Power is only part of the story; weight, gearing and torque delivery shape how quick a car feels.
Torque
A6: 273 lb-ft 7 Series: 383 lb-ft Electrified powertrains deliver torque instantly, so compare torque figures alongside the powertrain type.
Fuel Economy & Range
7 Series leads
The 7 Series has the slight upper hand on fuel economy & range. The 7 Series stands out with better fuel economy. The 7 Series uses less fuel on the standard combined cycle, which matters most if you drive a lot. The takeaway: on fuel economy & range, the 7 Series is the stronger car.
Fuel economy (combined)
A6: 26 mpg 7 Series: 28 mpg Better combined fuel economy lowers your running costs every week, and the savings add up over years of ownership.
Space & Practicality
Too close to call
The A6 and the 7 Series match each other closely in this area. If space & practicality was going to be your tiebreaker, you’ll need a different one.
Off-road & Towing
Too close to call
Swap one for the other and you’d lose nothing on off-road & towing. Either car will serve you equally well on off-road & towing.
Safety & Tech
Here the spec sheet speaks in model names and types. Compare the A6 and the 7 Series row by row in the table below.
Full Specifications
Engine & Performance
| Spec | A6 | 7 Series |
|---|---|---|
| Powertrain | Gas (12V mild hybrid) | Gas (48V mild hybrid) |
| Engine | 2.0L turbo I4 | 3.0L turbo I6 |
| Total system output | 261 hp | 375 hp (winner) |
| Torque | 273 lb-ft Least torque in class | 383 lb-ft (winner) |
| Transmission | 7-speed dual-clutch (S tronic) | 8-speed automatic |
| Drivetrain | AWD (quattro) | RWD (xDrive AWD available) |
Fuel Economy & Range
| Spec | A6 | 7 Series |
|---|---|---|
| Fuel economy (combined)EPA estimate where available | 26 mpg | 28 mpg (winner) |
| Fuel economy (city) | 24 mpg | 25 mpg |
| Fuel economy (highway) | 31 mpg | 31 mpg |
Space & Practicality
| Spec | A6 | 7 Series |
|---|---|---|
| Seats | 5 seats | 5 seats |
Off-road & Towing
| Spec | A6 | 7 Series |
|---|---|---|
| AWD / 4WD available | Yes | Yes |
Safety & Tech
| Spec | A6 | 7 Series |
|---|---|---|
| Basic warranty | 4 yr / 50,000 mi | 4 yr / 50,000 mi |
“N/A” means the manufacturer does not specify the value or we could not confirm it. Figures marked “manufacturer rating” are the maker’s own claims, not our measurements.
Which One Should You Buy?
Choose the 7 Series if…
- you want more power (375 hp vs 261 hp)
- you want more pulling power from low speeds (383 lb-ft vs 273 lb-ft of torque)
- you want better combined fuel economy (28 mpg vs 26 mpg)
Also Compared
Frequently Asked Questions
Should I buy the A6 or the 7 Series?
On the specs compared here, the 7 Series makes more sense for most buyers; the A6 doesn’t win a single measurable area.
Executive Summary
I’ll be upfront: I have no stake in whether you buy Audi or BMW. I only care that you end up with the right one of the A6 and the 7 Series. Honestly, 114 hp more power on the 7 Series does a lot of the persuading for me. Less flashy, but still real: the 7 Series brings better fuel economy.
I’d match them like this: the things a spec sheet can’t capture to the A6, engine & performance to the 7 Series.
My pick: the 7 Series.
Personal opinion based on the data above. Your priorities may differ.