The next-generation BMW M5 is just around the corner and according to a new report, it will be both very powerful and very heavy. Interestingly, it may not have quite as much power as previous reports have suggested and could be at a significant power disadvantage to the Mercedes-AMG GT 63 S E Performance.

Information recently published in the Bimmer Post forum suggests that the new M5 will have the same basic hybrid powertrain as the XM, consisting of a 4.4-liter twin-turbocharged V8 and an electric motor. In the standard XM, this setup is good for 644 hp and 590 lb-ft (800 Nm) while in the XM Label Red, those figures rise to 738 hp and 738 lb-ft (1,000 Nm). The report claims the M5’s figures will sit between the two XM models, delivering a combined 718 hp and 760 lb-ft (1,030 Nm) of torque.

Read: This Is Everything We Know About The 2025 BMW M5

The report adds that the M5 will use an 18.6 kWh battery pack, which is smaller than the 25.7 kWh pack of the XM. The 2025 M5 is expected to grow in size and be 36 mm (1.4 inches) longer and 70 mm (2.7 inches) wider than the outgoing model. Crucially, the next generation of the iconic super sedan is reportedly going to tip the scales at a hefty 5,368 lbs (2,435 kg). While that’s a staggering amount, the AMG GT 63 S E Performance also weighs around 2.4 tonnes but it offers more power than the upcoming M5, at 831 hp and 1,033 lb-ft (1,400 Nm).

Rendering by Thanos Pappas for CarScoops

BMW will sell the new M5 in both sedan and Touring guises. It will allegedly begin building the sedan this July and plans to keep it in production until early 2031. The M5 Touring should hit the production line this November.

A host of styling tweaks will also distinguish the M5 from lesser 5-Series models. For example, it will have thoroughly revised front and rear fascias, beefed-up brakes and wheels, quad tailpipes, a prominent rear diffuser, and a lip spoiler.

 2025 BMW M5 May Pack 718-HP Hybrid V8 But Will Reportedly Weigh Over 5,300 Lbs
BMW M5 Touring teaser