- On a dyno run, the 2025 M5 put down 696 hp and 729 lb-ft of torque at the wheels.
- This indicates the new super sedan could pack as much as 820 hp and 859 lb-ft.
- BMW claims the 2025 M5 sprints to 60 mph (96 km/h) in just 3.4 seconds flat.
BMW claims the new M5 pumps out an impressive 717 hp and 738 lb-ft (1,000 Nm) of torque, courtesy of its 4.4-liter twin-turbocharged V8 paired with an electric motor neatly integrated into the eight-speed automatic transmission. However, a recent dyno test raises indicates that BMW might have been modest in its official figures.
Surprising? Hardly. BMW has a bit of a reputation for underrating the power of its engines—an open secret in enthusiast circles.
Review: Was The 2025 BMW M5 Touring Worth The Weight?
Soon after this gray M5 arrived stateside, IND Distribution wasted no time getting it to Performance Eurowerks in Elk Grove Village, Illinois, for a date with the dyno. Across three runs, the super sedan flexed its muscles, and on the final pull, it laid down 696 hp and 729 lb-ft (988 Nm) of torque at the wheels. Yes, at the wheels.
Unpacking the Real Numbers
So, how much power is the M5 truly packing? Drivetrain losses or the gap between engine output and what reaches the wheels, vary, but if we apply the traditional 15% rule of thumb (hotly debated though it is), the combined output of the V8 and electric motor could actually be around 820 hp and 859 lb-ft (1,194 Nm) at the crank.
Those are some extraordinary numbers placing the M5 squarely in the territory of the Mercedes-AMG GT 63 S E Performance with its 831 hp. However, the Mercedes still holds a significant torque advantage, with AMG claiming it has an earth-twisting 1,033 lb-ft (1,400 Nm) under its belt.
Speed That Feels Faster Than Fast
As our own Chris Chilton discovered while putting the new M5 through its paces on German roads, this thing is a true performance brute. BMW says it requires 3.4 seconds to hit 60 mph (96 km/h), but it feels quicker than that, thanks in part to the instant response provided by the electric motor. Passengers? They’ll be reaching for the grab handles before the speedometer hits 50.
We have little doubt that tuners and aftermarket specialists will have an absolute field day with the new M5. The previous-generation model was highly receptive to modifications, and it probably won’t be long before tuning brands start to extract close to, or even more than, 1,000 horses from the revised V8 and electric motor.
