VS
At a Glance
Power
577hp @ 5500
388hp @ 6500
Torque
590lb-ft @ 2500
332lb-ft @ 1950
Fuel
18 mpg est.
21 mpg est.
Engine
4.0 L/243ci
3.0 L/182ci
Choosing between the Mercedes-Benz Gt and the Porsche 911 is one of the most common decisions car buyers in the United States face. The Mercedes-Benz Gt delivers 577hp @ 5500 while the Porsche 911 produces 388hp @ 6500. On fuel, the Gt returns 18 mpg est. while the 911 uses 21 mpg est. — important in a market where fuel prices change monthly. Pricing starts at $102,100 for the Gt and $148,000 for the 911. 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
Mercedes-Benz GtAMG GT 63 Coupe 2026 - From $102,100
Porsche 911Carrera T Coupe 2026 - From $148,000
Performance
Power Output (hp)
577hp @ 5500
388hp @ 6500
Torque (lb-ft)
590lb-ft @ 2500
332lb-ft @ 1950
Engine & Drivetrain
Engine Capacity
4.0 L/243ci
3.0 L/182ci
Engine Layout
—
Flat/Boxer
Cylinders
8
6
Fuel Type
Gasoline
Gasoline
Forced Induction Device
Turbocharged
Turbocharged
Transmission
Automatic
Manual
Number of Gears
—
6
Drive Wheels
All Wheel Drive
Rear Wheel Drive
Fuel Economy
Fuel Economy (Combined, est.)
18 mpg est.
21 mpg est.
Fuel Economy - City (mpg)
15mpg
17 (Est)mpg
Fuel Economy - Highway (mpg)
21mpg
25 (Est)mpg
Fuel Tank Capacity (gal)
18.5gal
16.6gal
Dimensions
Length (in)
186.1in
178.8in
Width (in)
78.1in
72.9in
Height (in)
53.3in
50.9in
Wheelbase (in)
106.3in
96.5in
Curb Weight (lbs)
4343lbs
3342lbs
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
—
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
Mercedes-Benz Gt
2 / 4 categories
Performance
Gt
Fuel Economy
911
Value
Gt
Practicality
Tied
Pros & Cons
Mercedes-Benz Gt
Lower starting price ($102,100)
Higher fuel consumption (18 mpg est.)
Porsche 911
Better fuel economy (21 mpg est.)
Higher starting price
Frequently Asked Questions
Which is more fuel efficient, the Gt or 911?
The Gt gets 18 mpg est. and the 911 gets 21 mpg est. on the combined cycle. The 911 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 Gt or 911?
The Gt produces 577hp @ 5500 and 590lb-ft @ 2500 of torque while the 911 delivers 388hp @ 6500 and 332lb-ft @ 1950 of torque. The Gt is the more powerful option.
What is the price difference between the Gt and 911?
The Gt starts from $102,100 and the 911 from $148,000. The Gt is cheaper by $45,900 at this variant level. Final on-the-road pricing varies by dealer and specification.
Should I buy the Gt or the 911?
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