VS
At a Glance
Power
591hp @ 6000
444hp @ 5900
Torque
590lb-ft @ 2050
442lb-ft @ 2700
Fuel
18 mpg est.
23 mpg est.
Engine
4.0 L/244ci
2.9 L/177ci
Choosing between the Audi A6 and the Audi S6 is one of the most common decisions car buyers in the United States face. The Audi A6 delivers 591hp @ 6000 while the Audi S6 produces 444hp @ 5900. On fuel, the A6 returns 18 mpg est. while the S6 uses 23 mpg est. — important in a market where fuel prices change monthly. Pricing starts at $116,500 for the A6 and $80,200 for the S6. Both vehicles have their merits. The right choice depends on your priorities: fuel economy, performance, towing ability, safety features or total cost of ownership. This comparison covers every specification available so you can make an informed decision.
Specification
Audi A64.0 TFSI quattro 2022 - From $116,500
Audi S62.9 TFSI Premium Plus 2025 - From $80,200
Performance
Power Output (hp)
591hp @ 6000
444hp @ 5900
Torque (lb-ft)
590lb-ft @ 2050
442lb-ft @ 2700
Engine & Drivetrain
Engine Capacity
4.0 L/244ci
2.9 L/177ci
Engine Layout
—
V
Cylinders
8
6
Fuel Type
Hybrid
—
Forced Induction Device
Turbocharged
—
Transmission
Automatic
Automatic
Number of Gears
8
8
Drive Wheels
All Wheel Drive
All Wheel Drive
Fuel Economy
Fuel Economy (Combined, est.)
18 mpg est.
23 mpg est.
Fuel Economy - City (mpg)
15mpg
19mpg
Fuel Economy - Highway (mpg)
22mpg
27mpg
Fuel Tank Capacity (gal)
19.3gal
19.3gal
Dimensions
Length (in)
196.7in
195in
Width (in)
76.8in
74.3in
Height (in)
58.6in
56.9in
Wheelbase (in)
115.3in
115.3in
Curb Weight (lbs)
4982lbs
4519lbs
Safety
ABS
✓ Standard
✓ Standard
Brake Assist
✓ Standard
✓ Standard
Stability Control
✓ Standard
✓ Standard
Traction Control
✓ Standard
✓ Standard
Driver Airbag
✓ Standard
✓ Standard
Passenger Airbag
✓ Standard
✓ Standard
Side Airbags Front
✓ Standard
✓ Standard
Curtain Airbags
✓ Standard
✓ Standard
Features & Tech
Air Conditioning
✓ Standard
✓ Standard
Climate Control
✓ Standard
✓ Standard
Cruise Control
✓ Standard
✓ Standard
Adaptive Cruise Control
✓ Standard
✓ Standard
Bluetooth
✓ Standard
✓ Standard
Backup Camera
✓ Standard
✓ Standard
Rear Parking Aid
—
✓ Standard
Sunroof
✓ Standard
✓ Standard
Heated Seats
✓ Standard
✓ Standard
Power Seat Adjustment
✓ Standard
✓ Standard
Keyless Entry
✓ Standard
✓ Standard
Alloy Wheels
✓ Standard
✓ Standard
The Verdict
Which Wins?
Overall Winner
Audi S6
2 / 4 categories
Performance
A6
Fuel Economy
S6
Value
S6
Practicality
Tied
Pros & Cons
Audi A6
Well-rounded specification
Higher fuel consumption (18 mpg est.)
Higher starting price
Audi S6
Better fuel economy (23 mpg est.)
Lower starting price ($80,200)
Few notable weaknesses
Frequently Asked Questions
Which is more fuel efficient, the A6 or S6?
The A6 gets 18 mpg est. and the S6 gets 23 mpg est. on the combined cycle. The S6 is the more fuel-efficient choice. In real-world conditions with a mix of highway and urban driving, actual figures will be slightly higher.
Which has more power, the A6 or S6?
The A6 produces 591hp @ 6000 and 590lb-ft @ 2050 of torque while the S6 delivers 444hp @ 5900 and 442lb-ft @ 2700 of torque. The A6 is the more powerful option.
What is the price difference between the A6 and S6?
The A6 starts from $116,500 and the S6 from $80,200. The S6 is cheaper by $36,300 at this variant level. Final on-the-road pricing varies by dealer and specification.
Should I buy the A6 or the S6?
It depends on your priorities. If fuel economy matters most, check the mpg figures above. If you need towing capacity, compare the towing ratings. For day-to-day driving - commutes, school runs and highway trips - consider ground clearance, service network coverage, and total cost of ownership including insurance and maintenance. Use the spec tables above to compare every detail before making your decision.