Now the M3 coupe is an M4 and ... of the steering wheel, press the start button above it and the V8 rips into life. It’s not especially loud (certainly not compared with the M4 GTS, which ...

The contenders are BMW's limited-run M4 CS and the 2025 Porsche 911 Carrera 4 GTS. The rear-engined thriller ... one between the compressor and turbine wheels of the turbocharger.