Compare the2026 BMW M5VS 2025 Mercedes AMG GT 4-Door

In the past twenty years hundreds of infants and young children have died after being left in vehicles, usually by accident. When turning the vehicle off, drivers of the M5 are reminded to check the back seat if they opened the rear door before starting out. The AMG GT 4-Door doesn’t offer a back seat reminder.

The BMW M5 has standard driver and front passenger side knee airbags mounted low on the dashboard. These airbags help prevent the driver and front passenger from sliding under their seatbelts or the main frontal airbags; this keeps them better positioned during a collision for maximum protection. Knee airbags also help keep the legs from striking the dashboard, preventing knee and leg injuries in the case of a serious frontal collision. The AMG GT 4-Door doesn’t offer a front passenger side knee airbag.

The M5 has standard PostCrash iBrake, which automatically apply the brakes in the event of a crash to help prevent secondary collisions and prevent further injuries. The AMG GT 4-Door doesn’t offer a post collision braking system: in the event of a collision that triggers the airbags, more collisions are possible without the protection of airbags that may have already deployed.

The M5’s standard lane departure warning system alerts a temporarily inattentive driver when the vehicle begins to leave its lane and gently nudges the vehicle back towards its lane. A lane departure warning system costs extra on the AMG GT 4-Door.

The BMW M5’s optional Surround View offers available integrated front and rear camera washers, ensuring clear, all-weather visibility without the need for manual cleaning. In contrast, the Mercedes AMG GT 4-Door lacks camera washers, requiring you to manually clean the cameras for optimal performance.

Both the M5 and the AMG GT 4-Door have standard driver and passenger frontal airbags, front side-impact airbags, driver knee airbags, side-impact head airbags, front seatbelt pretensioners, four-wheel antilock brakes, all wheel drive, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights, blind spot warning systems, rearview cameras, rear cross-path warning, driver alert monitors and available around view monitors.

The M5’s corrosion warranty is 7 years longer than the AMG GT 4-Door’s (12 vs. 5 years).

BMW pays for scheduled maintenance on the M5 for 3 years and 36,000 miles. BMW will pay for oil changes, air filter replacements, cabin filter replacement, brake fluid replacement, inspections, and any other required maintenance. Mercedes doesn’t pay scheduled maintenance for the AMG GT 4-Door.

J.D. Power and Associates’ 2025 Initial Quality Study of new car owners surveyed provide the statistics that show that BMW vehicles are better in initial quality than Mercedes vehicles. With 14 fewer problems per 100 vehicles, JD Power ranks BMW higher than Mercedes.

J.D. Power and Associates’ 2025 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that BMW vehicles are more reliable than Mercedes vehicles. J.D. Power ranks BMW above average in long-term dependability. With 13 more problems per 100 vehicles in the first three years of ownership, Mercedes is rated below average.

The M5’s 4.4 turbo V8 hybrid produces 355 more horsepower (717 vs. 362) and 369 lbs.-ft. more torque (738 vs. 369) than the AMG GT 43’s standard 3.0 turbo 6-cylinder hybrid. The M5’s 4.4 turbo V8 hybrid produces 288 more horsepower (717 vs. 429) and 354 lbs.-ft. more torque (738 vs. 384) than the AMG GT 53’s standard 3.0 turbo 6-cylinder hybrid. The M5’s 4.4 turbo V8 hybrid produces 140 more horsepower (717 vs. 577) and 148 lbs.-ft. more torque (738 vs. 590) than the AMG GT 63’s standard 4.0 turbo V8.

As tested in Motor Trend the BMW M5 is faster than the AMG GT 53 3.0 turbo 6-cylinder hybrid:

On the EPA test cycle the M5 Sedan running on electricity gets better mileage than the AMG GT 63 S E running on electricity (41 city/57 hwy vs. 31 city/26 hwy MPGe).

The M5 Sedan can travel with zero emissions for 29 miles. The AMG GT 4-Door can’t move without running its internal combustion engine.

For better stopping power the M5’s brake rotors are larger than those on the AMG GT 4-Door:

The M5 stops shorter than the AMG GT 4-Door:

For better traction, the M5 has larger tires than the AMG GT 4-Door (F:285/40R20 & R:295/35R21 vs. F:255/45R19 & R:285/40R19). The M5’s front tires are larger than the largest tires available on the AMG GT 4-Door (285/40R20 vs. 275/35R21).

The M5’s 285/40R20 front and 295/35R21 rear tires provide better handling because they have a lower 40 series front and 35 series rear profile (height to width ratio) that provides a stiffer sidewall than the AMG GT 4-Door’s standard 45 series front and 40 series rear tires.

For better ride, handling and brake cooling the M5 has standard 20-inch front and 21-inch rear wheels. Smaller 19-inch wheels are standard on the AMG GT 4-Door.

For a smoother ride and more stable handling, the M5’s wheelbase is 2.1 inches longer than on the AMG GT 4-Door (118.3 inches vs. 116.2 inches).

The front grille of the M5 uses electronically controlled shutters to close off airflow and reduce drag when less engine cooling is needed. This helps improve highway fuel economy. The AMG GT 4-Door doesn’t offer active grille shutters.

As tested by Car and Driver, the interior of the M5 Sedan is quieter than the AMG GT 63 S:

The M5 Sedan has 1.6 inches more front hip room, 1.4 inches more front shoulder room and .3 inches more rear hip room than the AMG GT 4-Door.

The M5 Sedan has a larger trunk than the AMG GT 4-Door (16.5 vs. 16.1 cubic feet).

The M5 has a much larger trunk with its rear seat up than the AMG GT 4-Door (27.2 vs. 16.1 cubic feet).

Pulling a handle automatically lowers the M5’s rear seats, to make changing between passengers and cargo easier. The AMG GT 4-Door doesn’t offer automatic folding seats.

With its sedan body style, valet key, locking rear seatbacks and remote trunk release lockout, the M5 offers cargo security. The AMG GT 4-Door’s non-lockable folding seat and non-lockable remote release defeat cargo security.

A power rear sunshade is optional in the M5 Sedan and manual rear side window sunshades are optional in the M5 to help block heat and glare for the rear passengers. The AMG GT 4-Door doesn’t offer rear side window sunshades.

The M5 has a standard heated steering wheel to take the chill out of steering on extremely cold winter days before the car heater warms up. A heated steering wheel costs extra on the AMG GT 4-Door.

The BMW M5 comes in sedan and station wagon bodystyles; the Mercedes AMG GT 4-Door isn’t available as a station wagon.

The BMW 5 Series outsold the Mercedes AMG GT by almost five to one during 2024.