BMW M5 V8 Power Drop: What Car Enthusiasts 40+ Need to Know

Daily Car

29/01/2026

Q: Why did BMW reduce the power in the M5’s V8 engine?

BMW has reduced the output of its 4.4-liter V8 engine in the latest M5 to comply with the stringent Euro 7 emissions regulations. These regulations require manufacturers to lower exhaust emissions, aiming for cleaner air and more environmentally friendly vehicles. To achieve this, BMW modified the engine’s software, enhanced the exhaust system, and adopted the Miller combustion cycle. This approach led to a decrease in power from 577 horsepower to 537 horsepower.

Q: What is the Miller combustion cycle, and how does it help emissions?

The Miller cycle is a variation of traditional engine processes. Unlike the ordinary Otto cycle, the Miller cycle keeps the intake valves open longer during the compression stroke. This adjustment makes the engine more efficient, especially under strict emission requirements. As a result, the engine uses less fuel and produces fewer pollutants, though there is a slight reduction in peak power.

Q: Has the total performance of the M5 changed with this update?

Despite the reduction in internal combustion power, the total system output for the hybrid M5 remains unchanged at 717 horsepower. This is achieved through improved software management of the electric drive system, keeping the car’s acceleration and overall performance on par with previous versions. BMW has not disclosed if torque output remains the same, but current figures indicate 553 lb-ft for earlier models. Real-world driving differences may be minimal due to the electric system compensating for the reduced V8 output.

Q: How does the new M5 compare to its competitors and previous models?

The updated M5, equipped with a hybrid system, retains competitive acceleration figures similar to the outgoing model, with 0-62 mph (0-100 km/h) in roughly 3.4 to 3.5 seconds. This matches or exceeds many rivals and maintains the M5’s reputation as a high-performance sedan. Compared with previous generations, the primary difference is improved efficiency and reduced environmental impact, keeping BMW in line with industry trends toward electrification and stricter emissions control.

Q: What are the practical changes for owners and drivers over 40?

Owners can expect an M5 that still delivers the power and sharp handling expected of an M-badged BMW. The hybrid technology operates seamlessly, requiring no change in driving habits. Maintenance for the hybrid system may differ slightly, but BMW aims for a user-friendly transition. New visual updates, like a refreshed hood badge and updated branding, will also be introduced, with more significant design changes expected in the 2027 model year. These updates continue to reflect BMW’s commitment to blending tradition with modern demands.

Q: How does this reflect broader trends in the automotive industry?

BMW’s changes to the M5 demonstrate how major automakers are adapting to increasing regulatory pressures without sacrificing performance. Hybrid technology and more efficient combustion cycles are becoming standard, indicating a shift toward cleaner, greener performance vehicles. This trend is expected to continue as regulations evolve and electrification becomes more widespread across the industry.

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