BMW M3 Sedan debuts at 2014 Detroit Auto Show with new turbocharged engine
The sixth-generation BMW M3 Sedan made its public debut in Detroit, introducing a turbocharged straight-six engine, lighter construction and improved efficiency over its predecessor.
BMW unveiled the new M3 Sedan to the public at the 2014 North American International Auto Show in Detroit, marking the arrival of the sixth-generation M3 with a host of technical changes. The car shares its core architecture and powertrain with the simultaneously revealed M4 Coupe, but appears here in four-door form for the first time since the E90.
Turbocharged straight-six replaces V8
Under the bonnet, BMW has replaced the previous 4.0-litre V8 with a 3.0-litre inline-six using the brand’s TwinPower Turbo technology. This engine produces 431hp and 550Nm of torque, available from 1,850rpm. That’s a notable increase in torque over the outgoing model, delivered across a much wider rev range, while peak power matches the M4 Coupe.
The new engine cuts the official 0-100km/h time to 4.1 seconds with the optional seven-speed M Double Clutch Transmission (M DCT), or 4.3 seconds with the standard six-speed manual. Top speed remains electronically limited to 155mph, but buyers can specify the M Driver’s Package to raise this to 174mph.
Focus on weight reduction and efficiency
BMW has put considerable effort into reducing weight, using a carbon fibre reinforced plastic (CFRP) roof as standard and extensive aluminium for the bonnet and front wings. The M3 Sedan is around 80kg lighter than its predecessor, contributing to improved agility and fuel consumption.
Standard brakes are compound discs, with the option of BMW M carbon ceramic brakes for further weight saving and fade resistance. The seven-speed M DCT transmission includes launch control and a mode that allows controlled wheelspin for track use.
Exterior design and equipment highlights
Visually, the M3 Sedan adopts a more aggressive front bumper, wider wheel arches and aerodynamic detailing compared to the standard 3 Series. The CFRP roof is unique in the segment and contributes to a lower centre of gravity. The interior features M-specific seats, steering wheel and trim, with BMW’s latest infotainment and driver assistance systems available.
- 431hp turbocharged straight-six engine
- 80kg lighter than previous M3
- Manual and M DCT transmission options
- Carbon fibre roof as standard
- Optional carbon ceramic brakes
Market context and related launches
The M3 Sedan’s debut at Detroit came alongside the launch of the M4 Coupe, which shares its platform and drivetrain. Both cars aim to balance performance with everyday usability and improved efficiency. For more on the M4 Coupe, seeBMW M4 Coupe debuts at 2014 Detroit Motor Show.
