BMW 3 Series Touring (G21) M340d (340 hp) MHEV xDrive Steptronic
Diesel engine with 340 hp (250 kW) and 516 lb-ft (700 Nm), built 2020–present, station wagon body, all-wheel drive (4x4). It is the most powerful diesel version of the generation.
EnlargePower340 hp (250 kW)
Torque516 lb-ft (700 Nm)
0–62 mph4.8 s
Top speed155 mph (250 km/h)
Combined44 mpg (5.4-5.8 l/100 km)
FuelDiesel
Specifications
Engine
| Engine version | M340d (340 hp) MHEV xDrive Steptronic |
|---|---|
| Engine code | B57D30 |
| Displacement | 3.0 L (2,993 cm³) |
| Cylinders | 6 |
| Cylinder layout | Inline |
| Engine position | Front, Longitudinal |
| Valves per cylinder | 4 |
| Fuel system | Diesel common rail |
| Compression ratio | 16-5 |
| Bore | 84 mm |
| Stroke | 90 mm |
| Engine systems | Start-stop system, particulate filter |
| Electric motor power | 11 hp |
Performance
| Power | 340 hp (250 kW) |
|---|---|
| Torque | 516 lb-ft (700 Nm) @ 1750-2250 rpm |
| 0–62 mph (0–100 km/h) | 4.8 s |
| Top speed | 155 mph (250 km/h) |
Fuel economy and emissions
| Fuel | Diesel |
|---|---|
| City | 32 mpg (7.3-7.8 l/100 km) |
| Highway | 44 mpg (5.4-5.8 l/100 km) |
| Combined | 44 mpg (5.4-5.8 l/100 km) |
| CO₂ emissions | 230 g/mi (143-153 g/km) |
| Emission standard | Euro 6d |
| Fuel tank | 15.6 gal (59 l) |
Body, dimensions and weight
| Body style | Station wagon |
|---|---|
| Doors | 5 |
| Length | 185.6 in (4,713 mm) |
| Width | 71.9 in (1,827 mm) |
| Height | 56.7 in (1,440 mm) |
| Curb weight | 4,145 lb (1,880 kg) |
| Gross vehicle weight | 5,324 lb (2,415 kg) |
| Cargo volume | 17.7 cu ft (500 l) |
| Drag coefficient | 0.28 |
Drivetrain and chassis
| Drive | All-wheel drive (4x4) |
|---|---|
| Steering | Electric power steering |
| Front suspension | Double wishbone |
| Rear suspension | Independent multi-link |
| Tires | Front wheel tires: 225/45 R18 95Y XL\; Rear wheel tires: 255/40 R18 99Y XL |
| Wheels | Front wheel rims: 7.5J x 18\; Rear wheel rims: 8.5J x 18 |
| Driver assistance | ABS (Anti-lock braking system) |
What to check on a BMW 3 Series with this engine
- On a diesel, check the particulate filter (DPF), the injectors and the dual-mass flywheel: they are the expensive repairs.
- All-wheel drive needs fresh fluid in the differentials and the coupling: ask for the service records.
- Compare the odometer with the readings in the service records and in the VIN history report: a big gap means the mileage was rolled back.
Other BMW 3 Series Touring (G21) engines
| Engine | Fuel | Power | Combined |
|---|---|---|---|
| 318d (150 hp) | Diesel | 150 hp (110 kW) | |
| 318d (150 hp) Steptronic | Diesel | 150 hp (110 kW) | |
| 320d (190 hp) | Diesel | 190 hp (140 kW) | |
| 320d (190 hp) Steptronic | Diesel | 190 hp (140 kW) | |
| 320d (190 hp) xDrive Steptronic | Diesel | 190 hp (140 kW) | |
| 320i (184 hp) Steptronic | Gasoline | 184 hp (135 kW) | |
| 330d (265 hp) Steptronic | Diesel | 265 hp (195 kW) | |
| 330d (265 hp) xDrive Steptronic | Diesel | 265 hp (195 kW) | |
| 330i (258 hp) Steptronic | Gasoline | 258 hp (190 kW) | |
| 330i (258 hp) xDrive Steptronic | Gasoline | 258 hp (190 kW) | |
| M340i (374 hp) xDrive Steptronic | Gasoline | 374 hp (275 kW) | |
| 318i (156 hp) Steptronic | Gasoline | 156 hp (115 kW) | |
| 320d (190 hp) MHEV Steptronic | Diesel | 190 hp (140 kW) | 56 mpg (4.2-4.3 l/100 km) |
| 320d (190 hp) MHEV xDrive Steptronic | Diesel | 190 hp (140 kW) | 52 mpg (4.5 l/100 km) |
| 320e (204 hp) Plug-in Hybrid Steptronic | Gasoline hybrid | 204 hp (150 kW) | 138 mpg (1.7-1.9 l/100 km) |
| 320e (204 hp) Plug-in Hybrid xDrive Steptronic | Gasoline hybrid | 204 hp (150 kW) | 124 mpg (1.9-2.1 l/100 km) |
| 330d (286 hp) MHEV Steptronic | Diesel | 286 hp (210 kW) | 52 mpg (4.5-4.8 l/100 km) |
| 330d (286 hp) MHEV xDrive Steptronic | Diesel | 286 hp (210 kW) | 49 mpg (4.8-5.2 l/100 km) |
| 330e (292 hp) Plug-in Hybrid Steptronic | Gasoline hybrid | 292 hp (215 kW) | 138 mpg (1.7-1.9 l/100 km) |
| 330e (292 hp) Plug-in Hybrid xDrive Steptronic | Gasoline hybrid | 292 hp (215 kW) | 124 mpg (1.9-2.2 l/100 km) |