The BMW M4 Competition Package is the first significant upgrade to the BMW M3 and M4 range since the cars were launched early in 2014. Available on all derivatives – saloon, coupe and convertible – the package brings more power, new suspension components and wheels, mild styling revisions and additional equipment.

The base M3 and M4 models have been criticised for their very spikey and unpredictable handling at the limit, which BMW’s M division engineers have worked to rectify with the raft of chassis upgrades.

Engine, transmission and 0-60mph time
The 3-litre straight six with twin turbochargers are carried over, but a 19bhp hike lifts peak power to 444bhp. Torque is unchanged at 406lb ft at 1850rpm.

The extra power cuts a tenth of a second from the 0-62mph times – the M3 and M4 Coupe with the optional seven-speed M Double Clutch Transmission now reach 62mph in four seconds flat, while a manual M4 Convertible requires 4.5 seconds. Top speeds are still limited to 155mph.

Power is sent rearwards via an Active M Differential, which has been retuned to improve traction, as has the dynamic stability control system.

The Competition Package brings new springs, dampers and anti-roll bars,...