2028 BMW M5 Prototype Showcases Aggressive V8 Engine Sound

The 2028 BMW M5 is still in the testing phase, but a recent spy video has captured the sound of its twin-turbocharged V8 engine, which is already making a strong impression. This updated super sedan is expected to be released in about a year, and the video shows the car testing near the Nürburgring, where the engine's aggressive tone stands out.

As BMW works on the mid-cycle update for the M5, the design appears to be evolutionary rather than a complete overhaul. The prototype maintains the traditional separate kidney grilles, differing from the unified horizontal grille seen on the smaller 2027 3 Series. The rear taillights are also expected to retain their current shape, with only minor updates to their internal graphics.

Inside the M5, significant changes are anticipated. The cabin will likely adopt features from the 3 Series, but with enhancements to create a more upscale environment. BMW aims to elevate the 5 Series' interior to reflect its premium status, while still following the layout of the 3 Series, potentially including an optional passenger display.

Unveiling the M5's Powerful Engine Sound

The latest footage highlights the M5's engine sound, which is deeper and more aggressive than previous models. The current M5 features a twin-turbocharged 4.4-liter V8 combined with an electric motor, producing a total of 717 horsepower in the U.S. market. The prototype's growl as it accelerates around the track is a promising sign for enthusiasts, although it is important to note that the final production model may have adjustments to its exhaust system and engine calibration.

Cleared for Release

Mechanically, the M5 is expected to retain its plug-in hybrid powertrain, with the prototype showcasing a charging port on the driver-side front fender. Variations in power output may occur between European and American models due to differing emissions regulations, with hopes that the Euro-spec version will regain some of the horsepower lost to comply with Euro 7 standards.

The M5 Touring is also set to receive similar updates, ensuring that BMW's high-performance wagon remains aligned with the sedan. Production for both models is anticipated to begin next year, and if BMW decides to produce another M5 CS, it will likely follow the facelift, although this variant may not debut until 2028 or 2029.