VS
At a Glance
Power
450hp @ 8250
577hp @ 5500
Torque
317lb-ft @ 4000
590lb-ft @ 2500
Fuel
20 mpg est.
18 mpg est.
Engine
4.2 L/254ci
4.0 L/243ci
Choosing between the Audi A5 and the Mercedes-Benz Gt is one of the most common decisions car buyers in the United States face. The Audi A5 delivers 450hp @ 8250 while the Mercedes-Benz Gt produces 577hp @ 5500. On fuel, the A5 returns 20 mpg est. while the Gt uses 18 mpg est. — important in a market where fuel prices change monthly. Pricing starts at $70,900 for the A5 and $102,100 for the Gt. 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 A5RS 5 2dr Cpe 2015 - From $70,900
Mercedes-Benz GtAMG GT 63 Coupe 2026 - From $102,100
Performance
Power Output (hp)
450hp @ 8250
577hp @ 5500
Torque (lb-ft)
317lb-ft @ 4000
590lb-ft @ 2500
Engine & Drivetrain
Engine Capacity
4.2 L/254ci
4.0 L/243ci
Cylinders
8
8
Fuel Type
Gasoline
Gasoline
Forced Induction Device
—
Turbocharged
Transmission
Automatic
Automatic
Number of Gears
7
—
Drive Wheels
All Wheel Drive
All Wheel Drive
Fuel Economy
Fuel Economy (Combined, est.)
20 mpg est.
18 mpg est.
Fuel Economy - City (mpg)
16mpg
15mpg
Fuel Economy - Highway (mpg)
23mpg
21mpg
Fuel Tank Capacity (gal)
16.1gal
18.5gal
Dimensions
Length (in)
183in
186.1in
Width (in)
73.2in
78.1in
Height (in)
53.8in
53.3in
Wheelbase (in)
108.3in
106.3in
Curb Weight (lbs)
4009lbs
4343lbs
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 A5
2 / 4 categories
Performance
Gt
Fuel Economy
A5
Value
A5
Practicality
Tied
Pros & Cons
Audi A5
Better fuel economy (20 mpg est.)
Lower starting price ($70,900)
Few notable weaknesses
Mercedes-Benz Gt
Well-rounded specification
Higher fuel consumption (18 mpg est.)
Higher starting price
Frequently Asked Questions
Which is more fuel efficient, the A5 or Gt?
The A5 gets 20 mpg est. and the Gt gets 18 mpg est. on the combined cycle. The A5 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 A5 or Gt?
The A5 produces 450hp @ 8250 and 317lb-ft @ 4000 of torque while the Gt delivers 577hp @ 5500 and 590lb-ft @ 2500 of torque. The Gt is the more powerful option.
What is the price difference between the A5 and Gt?
The A5 starts from $70,900 and the Gt from $102,100. The A5 is cheaper by $31,200 at this variant level. Final on-the-road pricing varies by dealer and specification.
Should I buy the A5 or the Gt?
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