BMW Série 4 2020– car dimensions: 4768 mm long, 1852 mm wide and 1383 mm high. Unladen weight is 1,600 kg. Braked towing is 1,600 kg.
The 2024 420i Coupé has a standard curved dual screen with 12.3-inch digital instruments and 14.9-inch central touchscreen on BMW OS 8.5. Wireless Apple CarPlay and Android Auto come as standard along with dual-zone automatic climate control. Standard driver aids include front collision warning with braking, lane departure warning with return assist, cruise control with brake function, front and rear parking sensors, reversing camera and Park Assist with automatic manoeuvring plus reversing assistant. Blind-spot warning is available via optional Drive Assist packages.
Boot capacity is 440 litres with the rear seats in place. The seats fold for longer items but no expanded volume figure is published for the Coupé.
Braked towing capacity is 1600 kg and unbraked is 750 kg. Payload stands at 490 kg. No heavy-duty cooling or reinforced suspension packages are listed for this model.
Sport seats with heating come standard and give firm support on longer drives. Acoustic windscreen glass cuts road and wind noise for a quieter cabin. Three-zone automatic climate control is standard so front and rear zones stay independent. Ambient lighting is standard and sets a calm mood at night. An optional glass roof adds light and air when wanted.
WLTP combined fuel use 6.3-7.1 l/100 km and CO2 143-161 g/km for the 420i.
Euro NCAP five-star rating from 2019 tests on this generation.
Standard safety includes Active Guard Plus, front collision warning with braking, lane departure warning with return, speed limit info, DSC, ABS and multiple airbags.
Park Assist with reversing camera is standard.
Condition Based Service sets oil and inspection intervals by actual use.
The 420i petrol engine returns WLTP combined figures of 6.3 to 7.1 litres per 100 km depending on wheels and options, with matching CO2 between 143 and 161 g/km. Real-world use will vary with load, style and weather.
Servicing follows BMW Condition Based Service so the car tells you when oil, filters or brake fluid need attention rather than fixed time or distance alone. Optional Service Inclusive contracts cover scheduled work for set years and kilometres.
Crash protection earned five Euro NCAP stars. Standard kit covers Active Guard Plus with collision and pedestrian warning plus city braking, lane keep with steering help, speed limit display, stability and traction control, ABS and a full set of airbags including side and curtain.
Daily running stays simple with the standard Park Assist camera and the long service life of the eight-speed automatic. Keep the car on BMW fluids and software updates for best reliability.
Length 4768 mm, Width 1852 mm, Height 1383 mm, Wheelbase 2851 mm (Série 4 2020–)
Sources: manufacturer data, BMW press kit Technical specifications BMW 4 Series Coupé 01/2024, confirmed dimensions and related on and French brochure.