BMW M340i (382 Hp) Automatic (G20)
BMW 3 series 2018 3.0 petrol description
Sedan BMW M340i (382 Hp) Automatic is being produced from January, 2018. It has six-cylinder petrol engine with displacement of 3.0 litres, which produces power of 382 horsepower on 5800 rpm - this is the most powerfull BMW 3 sērija 2018 version and torque 500 Nm (Newton metres) on 1800 revolutions per minute.
This 6-cylinder 24-valve engine camshaft is driven by chain (What is an engine chain and belt? ). Engine has fuel injection system and Twin-Scroll turbine. The engine meets the Euro 6 emissions standard. Average engine life expectancy (mileage before serious repairs are needed) is from 210 000 to 360 000 kilometres. Remember that engine life depends on regular maintenance and the quality of the materials used (oils, fuels, etc.).
More engine specs
The B58 engine, compared to its predecessor, features a 20% increase in boost pressure, a closed-deck cylinder block design, an increased compression ratio of 11.0:1, and a slightly larger displacement of 2998 cc, up from 2979 cc, with an additional weight of 8 ...
This BMW 3 series 3.0 engine oil type is 0W-20, 0W-30, 5W-30 and oil capacity is 6.5 litres.
BMW M340i (382 Hp) Automatic has classical rear wheel drive (RWD) and automatic gearbox with 8 gears.
The maximum speed of this car is 209 km/h.
The fuel consumption of this BMW M340i (382 Hp) Automatic in combined mode (combining urban and highway driving) is 9.4 litres per 100km (10.6 km/l), city fuel economy - 10.7 l/100km, fuel consumption on highway - 7.8 l/100km. Fuel tank capacity is 59 litres or 15.59 gallons, which gives a mileage up to 620 kilometers without refueling in urban cycle and even up to 740 kilometers on highway.
BMW 3 series safety
During safety testing BMW 3 series has obtained 5 stars from five, which means very high safety level.
Adults (driver and passenger) safety of BMW 3 series is evaluated with outstanding rate 97 from 100, children safety: very good mark - 87 from 100, for pedestrian protection BMW 3 series got 87 points from 100.
BMW 3 series safety equipment has been rated as good - 76 percents from 100.
BMW M340i (382 Hp) Automatic technical data
| Model: | BMW M340i (382 Hp) Automatic | ||
|---|---|---|---|
| Body style: | Sedan | ||
| Production period: | 2018. January | ||
| Engine: | 2998 cm3 Petrol, 6 cylinders | CO2 emissions: | no data |
| Power: | 382 HP ON 5800 RPM | Torque: | 500 NM ON 1800 RPM |
| Gearbox: | Automatic gearbox (8 gears) | Drive type: | Rear wheel drive (RWD) |
| Maximum speed: | 209 km/h | Acceleration 0-100 km/h: | no data |
| Fuel consumption (l/100km): | 9.4 (combined) 10.7 (urban) 7.8 (highway) | ||
| Fuel tank capacity: | 59 litres (15.6 gallons) | ||
| Car dimensions: | 4.71m (length) 1.83m (width) 1.44m (height) | ||
BMW M340i (382 Hp) Automatic engine B58
Engine reliability and common problems:
The B58 engine, compared to its predecessor, features a 20% increase in boost pressure, a closed-deck cylinder block design, an increased compression ratio of 11.0:1, and a slightly larger displacement of 2998 cc, up from 2979 cc, with an additional weight of 8 kg. Despite its advancements, the engine has several common issues.Coolant leaks are frequently reported, often linked to a drop in coolant levels without an obvious cause. In some cases, replacing the expansion tank cap resolves the issue. Head gasket failure is another recurring problem due to the engine's high operating temperatures. Symptoms include a strong smell of burning oil and sometimes visible smoke. Oil leaks are also common, originating from areas such as the oil filter housing, oil cooler, or head gasket. Prompt repairs are crucial to prevent oil starvation and potential engine damage.
The B58, like many direct-injection engines, often experiences carbon buildup on intake valves, leading to fluctuating idle and reduced performance. Less frequently, issues arise with the VANOS system, responsible for variable valve timing. Symptoms include power loss, uneven idle, stalling, and high fuel consumption. VANOS problems typically appear around 80,000–100,000 km. Oil filter disintegration is another concern, with parts of the filter sometimes breaking off and getting stuck in the housing. This can lead to oil leaks and other complications, often caused by low-quality filters or improper replacement.
Additionally, valve cover gaskets are prone to leaks, with symptoms such as the smell of burning oil, smoke, or low oil level warnings. Plastic valve covers can also crack over time. These issues usually arise between 60,000 and 100,000 km. Some BMW G-series models produced before 2021 may encounter failures in the oil pump due to a design flaw in the internal bushing. The recommended solution is upgrading to the sixth revision oil pump with a metal component.
Overall, while the B58 engine is a significant improvement in performance and efficiency, these known issues highlight the importance of regular maintenance, timely repairs, and the use of high-quality parts to ensure reliability.
Overall, this engine can last around 210,000 to 360,000 km if properly maintained, using the correct quality oil and fuel, and carrying out regular checks and maintenance.
The engine has hydraulic valve tappets (lifters), which provide quieter operation and do not require periodic adjustment, but are more complex in design and can cause serious engine damage in the event of failure.
| Engine displacement | 2998 cm3 |
|---|---|
| Number of cylinders | 6 |
| Bore (cylinder diameter) | 82 mm |
| Stroke length (piston move) | 94.6 mm |
| Compression ratio | 11 : 1 |
| Camshaft drive | Timing chain Chain motors are considered more reliable, chain replacement usually is required less often than a timing belt, but they are often louder and vibrate more. |
| Fuel system | Injection |
| BMW M340i (382 Hp) Automatic oil type | 0W-20, 0W-30, 5W-30 |
| Oil capacity | 6.5 litres (6.9 quarts) |
| Coolant capacity | 10.5 litres (11.1 quarts) |
| Power | 326 - 388 HP ON 5800 RPM |
| Torque | 450 - 500 NM ON 1800 RPM |
| Start of production (year) | 2015 |
| Duration of production | 10 years |
| Engine also used on | BMW X4 |
All BMW 3 series sedan [2018 modifications
| Modification | Engine | Power | Consumption | Gearbox | Drive type |
|---|---|---|---|---|---|
|
BMW 318i
Most fuel efficient petrol version by real consumption |
2.0 Petrol | 156 HP | - | Automatic (8) | Rear wheel |
| BMW 320i | 2.0 Petrol | 184 HP | - | Automatic (8) | Rear wheel |
| BMW 320i 4x4 | 2.0 Petrol | 184 HP | - | Automatic (8) | All wheel |
|
BMW 330i
Most fuel efficient petrol version |
2.0 Petrol | 258 HP | 6.1 l/100km | Automatic (8) | Rear wheel |
| BMW 330i xDrive 4x4 | 2.0 Petrol | 258 HP | 6.5 l/100km | Automatic (8) | All wheel |
|
BMW 318d
Most fuel efficient diesel version by real consumption |
2.0 Diesel | 150 HP | - | Manual (6) | Rear wheel |
| BMW 318d | 2.0 Diesel | 150 HP | - | Automatic (8) | Rear wheel |
| BMW 320d Jan 2018 — Dec 2020 | 2.0 Diesel | 190 HP | 4.7 l/100km | Manual (6) | Rear wheel |
|
BMW 320d
Jan 2018 — Dec 2020 Most fuel efficient diesel version |
2.0 Diesel | 190 HP | 4.5 l/100km | Automatic (8) | Rear wheel |
| BMW 320d xDrive 4x4 Jan 2018 — Dec 2020 | 2.0 Diesel | 190 HP | 4.8 l/100km | Automatic (8) | All wheel |
| BMW 330e | 2.0 Hybrid | 113 HP | - | Automatic (8) | Rear wheel |
| BMW 320e Jan 2021 — | 2.0 Hybrid | 113 HP | - | Automatic (8) | Rear wheel |
| BMW 330e 4x4 | 2.0 Hybrid | 113 HP | - | Automatic (8) | All wheel |
|
BMW M340i 4x4
Most dynamic version - 100 km/h in 4.4 seconds |
3.0 Petrol | 374 HP | - | Automatic (8) | All wheel |
|
BMW M340i (382 Hp) Automatic
Most powerfull petrol version (382 HP) |
3.0 Petrol | 382 HP | 9.4 l/100km | Automatic (8) | Rear wheel |
|
BMW M340i (382 Hp) xDrive Automatic 4x4
Most powerfull petrol version (382 HP) |
3.0 Petrol | 382 HP | 9.4 l/100km | Automatic (8) | All wheel |
|
BMW 330d
Jan 2019 — Dec 2020 Most powerfull diesel version (265 HP) |
3.0 Diesel | 265 HP | - | Automatic (8) | Rear wheel |
|
BMW 330d 4x4
Jan 2019 — Dec 2020 Most powerfull diesel version (265 HP) |
3.0 Diesel | 265 HP | - | Automatic (8) | All wheel |