VS
At a Glance
Power
591hp @ 6000
375hp @ 5800
Torque
590lb-ft @ 2050
391lb-ft @ 1300
Fuel
18 mpg est.
20 mpg est.
Engine
4.0 L/244ci
3.5 L/212ci
Choosing between the Audi A6 and the Genesis G80 is one of the most common decisions car buyers in the United States face. The Audi A6 delivers 591hp @ 6000 while the Genesis G80 produces 375hp @ 5800. On fuel, the A6 returns 18 mpg est. while the G80 uses 20 mpg est. — important in a market where fuel prices change monthly. Pricing starts at $109,000 for the A6 and $78,350 for the G80. 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 2021 - From $109,000
Genesis G803.5T Sport Prestige AWD 2026 - From $78,350
Performance
Power Output (hp)
591hp @ 6000
375hp @ 5800
Torque (lb-ft)
590lb-ft @ 2050
391lb-ft @ 1300
Engine & Drivetrain
Engine Capacity
4.0 L/244ci
3.5 L/212ci
Engine Layout
—
V
Cylinders
8
6
Fuel Type
Hybrid
Gasoline
Forced Induction Device
Turbocharged
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.
20 mpg est.
Fuel Economy - City (mpg)
15mpg
16 (2025)mpg
Fuel Economy - Highway (mpg)
22mpg
24 (2025)mpg
Fuel Tank Capacity (gal)
19.3gal
19.3gal
Dimensions
Length (in)
196.7in
197in
Width (in)
76.8in
75.8in
Height (in)
58.6in
57.7in
Wheelbase (in)
115.3in
118.5in
Curb Weight (lbs)
4960lbs
4508lbs
Safety
ABS
✓ Standard
✓ Standard
Brake Assist
✓ 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
Genesis G80
2 / 4 categories
Performance
A6
Fuel Economy
G80
Value
G80
Practicality
Tied
Pros & Cons
Audi A6
Well-rounded specification
Higher fuel consumption (18 mpg est.)
Higher starting price
Genesis G80
Better fuel economy (20 mpg est.)
Lower starting price ($78,350)
Few notable weaknesses
Frequently Asked Questions
Which is more fuel efficient, the A6 or G80?
The A6 gets 18 mpg est. and the G80 gets 20 mpg est. on the combined cycle. The G80 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 G80?
The A6 produces 591hp @ 6000 and 590lb-ft @ 2050 of torque while the G80 delivers 375hp @ 5800 and 391lb-ft @ 1300 of torque. The A6 is the more powerful option.
What is the price difference between the A6 and G80?
The A6 starts from $109,000 and the G80 from $78,350. The G80 is cheaper by $30,650 at this variant level. Final on-the-road pricing varies by dealer and specification.
Should I buy the A6 or the G80?
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.