BMW first launched the M4 a decade ago as the two-door Coupe ... That’s because the loud exhaust button is switched on as standard. I drove the Alfa Romeo Giulia Quadrifoglio a couple of months ...

When it arrived in 2016, the M4 GTS was the fastest production BMW ever, with a top speed ... sonic character to the base model with a loud, crackling exhaust note under full throttle.

Can be tricky in the wet and on challenging roads BMW ... the exhaust is titanium and the brakes are carbon ceramics. All this contributes to a weight saving of 30kg over an ordinary M4 fitted ...