VS
At a Glance
Power
444hp @ 5900
335hp @ 5000
Torque
442lb-ft @ 2700
368lb-ft @ 1600
Fuel
23 mpg est.
25 mpg est.
Engine
2.9 L/177ci
3.0 L/183ci
Choosing between the Audi S6 and the BMW 8 Series is one of the most common decisions car buyers in the United States face. The Audi S6 delivers 444hp @ 5900 while the BMW 8 Series produces 335hp @ 5000. On fuel, the S6 returns 23 mpg est. while the 8 Series uses 25 mpg est. — important in a market where fuel prices change monthly. Pricing starts at $80,200 for the S6 and $94,500 for the 8 Series. 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 S62.9 TFSI Premium Plus 2025 - From $80,200
BMW 8 Series840i Gran Coupe 2026 - From $94,500
Performance
Power Output (hp)
444hp @ 5900
335hp @ 5000
Torque (lb-ft)
442lb-ft @ 2700
368lb-ft @ 1600
Engine & Drivetrain
Engine Capacity
2.9 L/177ci
3.0 L/183ci
Engine Layout
V
Inline
Cylinders
6
6
Fuel Type
—
Gasoline
Forced Induction Device
—
Turbocharged
Transmission
Automatic
Automatic
Number of Gears
8
8
Drive Wheels
All Wheel Drive
Rear Wheel Drive
Fuel Economy
Fuel Economy (Combined, est.)
23 mpg est.
25 mpg est.
Fuel Economy - City (mpg)
19mpg
21mpg
Fuel Economy - Highway (mpg)
27mpg
29mpg
Fuel Tank Capacity (gal)
19.3gal
18gal
Dimensions
Length (in)
195in
200.2in
Width (in)
74.3in
76.1in
Height (in)
56.9in
55.2in
Wheelbase (in)
115.3in
119in
Curb Weight (lbs)
4519lbs
4262lbs
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
✓ 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
S6
Fuel Economy
8 Series
Value
S6
Practicality
Tied
Pros & Cons
Audi S6
Lower starting price ($80,200)
Higher fuel consumption (23 mpg est.)
BMW 8 Series
Better fuel economy (25 mpg est.)
Higher starting price
Frequently Asked Questions
Which is more fuel efficient, the S6 or 8 Series?
The S6 gets 23 mpg est. and the 8 Series gets 25 mpg est. on the combined cycle. The 8 Series 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 S6 or 8 Series?
The S6 produces 444hp @ 5900 and 442lb-ft @ 2700 of torque while the 8 Series delivers 335hp @ 5000 and 368lb-ft @ 1600 of torque. The S6 is the more powerful option.
What is the price difference between the S6 and 8 Series?
The S6 starts from $80,200 and the 8 Series from $94,500. The S6 is cheaper by $14,300 at this variant level. Final on-the-road pricing varies by dealer and specification.
Should I buy the S6 or the 8 Series?
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.
Also Consider