BMW 3 Series Saloon vs BMW M3 Saloon

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3 Series Saloon compared with M3 Saloon

	BMW3 Series Saloon	BMWM3 Saloon
Overview
Released
Released	March 2019	March 2021
Performance
Powertrain
Powertrain	Petrol, Plug-in hybrid, Mild hybrid	Petrol
Power
Power	181–386 bhp	523 bhp (better)
0–62 mph
0–62 mph	4.3–7.4 s	3.5 s (better)
Top speed
Top speed	143–155 mph	155 mph
Engine or motors
Engine or motors	320i: 1,998 cc four-cylinder turbo petrol, 135 kW (184 hp); 330e: same engine plus an 80 kW (109 hp) motor, 215 kW (292 hp) system output; M340i xDrive and Black Edition: 2,998 cc six-cylinder turbo petrol with 48 V mild hybrid, 288 kW (392 hp) system output; bhp converted from BMW's kW figures	2,993 cc six-cylinder twin-turbo petrol, 390 kW (530 hp); bhp converted from BMW's kW figures
Torque
Torque	300 Nm (320i), 420 Nm system (330e), 540 Nm (M340i xDrive)	650 Nm
Gearbox
Gearbox	8-speed Steptronic automatic	8-speed automatic
Drive
Drive	Rear-wheel drive (320i, 330e) or xDrive all-wheel drive (M340i)	M xDrive all-wheel drive
Range and charging
Zero-emission range (WLTP)
Zero-emission range (WLTP)	61–63 miles	–
Battery
Battery	19.5 kWh	–
Economy (WLTP)
Economy (WLTP)	40.4–353.1 mpg (better)	27.7 mpg
Range detail
Range detail	330e WLTP electric range 59–63 miles depending on trim and equipment	–
Charging
Charging	330e: 19.5 kWh battery; 11 kW AC, 0–100% in 2 hours 15 minutes	–
Efficiency
Efficiency	WLTP combined: 41.5–43.5 mpg (320i), 313.9–353.1 mpg (330e, GB figures; BMW also lists 104.6–117.7 mpg for Northern Ireland), 37.7–40.4 mpg (M340i xDrive)	WLTP combined: 27.4–27.7 mpg
CO2 emissions
CO2 emissions	147–154 g/km (320i), 19–21 g/km (330e), 159–172 g/km (M340i xDrive), WLTP combined	231–235 g/km, WLTP combined
Practicality
Body
Body	Saloon	Saloon
Seats
Seats	5	5
Boot
Boot	–	480 litres
Length
Length	4,713 mm	4,801 mm
Width
Width	1,827 mm	1,903 mm
Boot
Boot	480 litres (320i, M340i); 375 litres (330e)	480 litres
Towing
Towing	Up to 1,600 kg braked (320i), 1,500 kg (330e), 1,800 kg (M340i)	–
Size
Size	4,713 mm long (4,714 mm M340i), 1,827 mm wide (2,068 mm with mirrors), 1,440 mm high (1,446 mm 330e); 2,851 mm wheelbase; EC unladen weight including a 75 kg driver is 1,590 kg (320i), 1,910 kg (330e), 1,835 kg (M340i xDrive)	4,801 mm long, 1,903 mm wide (2,068 mm with mirrors), 1,438 mm high; 2,857 mm wheelbase; EC unladen weight including a 75 kg driver is 1,865 kg