BMW has unveiled its 4 Series coupe ahead of its debut at the Frankfurt Motor Show in September.

The 4 Series will replace the 3 Series coupe when it arrives in the UK in October.

Prices will start at £31,575 for the BMW 420d SE – that’s around £500 more than the equivalent current 3-series coupe.

BMW says it combines driving involvement with efficiency thanks to a host of EfficientDynamics technology as standard, such as stop/start and brake energy regeneration.

The 4 Series has a 50mm longer wheelbase than the 3 Series coupe and is 43mm wider. The roofline is 16mm lower which, combined with the lowered suspension, results in the lowest centre of gravity of any current BMW.

The slightly forward-leaning grille and twin round circular headlights brings the 4 Series in line with the rest of the BMW range.

The 4 Series will initially be available with three engines, including the entry-level diesel 420d which will be of most interest to fleets thanks to a combined fuel economy of 60.1 mpg and CO2 emissions of 124 g/km.

With 184 bhp the 420d will be no slouch – accelerating to 62 mph in 7.5 seconds.

The new 4 Series will offer a significantly higher standard specification than the model it replaces with front and rear parking sensors, heated front seats and xenon headlights standard across the range.