BMW 4 series 2017 2.0 petrol description
Coupe BMW 420i has been produced from March, 2017 to January, 2020. It has four-cylinder petrol engine with displacement of 2.0 litres, which produces power of 184 horsepower on 5000 rpm and torque 270 Nm (Newton metres) on 1350 revolutions per minute.
This 4-cylinder 16-valve engine camshaft is driven by chain (What is an engine chain and belt? ). Engine has fuel injection system and twinscroll turbine. Engine versions compliant with Euro 5 and Euro 6 emission standards available. Average engine life expectancy (mileage before serious repairs are needed) is from 190 000 to 330 000 kilometres. Note that engine life can be longer or shorter depending on maintenance.
More engine specs
Until 2015, engines used to have problems with the timing chain guides, which have been ...
This BMW 4 series 2.0 engine oil type is 5W-30 and oil capacity is 5 litres.
BMW 420i has classical rear wheel drive (RWD) and manual gearbox with 6 gears.
BMW 420i accelerates to speed 100 kilometres per hour in 7.3 seconds. The maximum speed of this car is 236 km/h.
The fuel consumption of this BMW 420i in combined mode (combining urban and highway driving) is 5.8 litres per 100km (17.2 km/l), fuel consumption in city - 7.7 l/100km, highway fuel economy - 4.7 l/100km. Fuel tank capacity is 60 litres or 15.85 gallons, which gives a mileage up to 1020 kilometers without refueling in urban cycle and even up to 1260 kilometers on highway.
According to user reviews, this BMW real everyday fuel consumption is 7.4 litres per 100 km, which is 28% more than the manufacturer's stated. More - Real BMW 4 series fuel consumption.

BMW 420i technical data
Model: | BMW 420i | ||
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Body style: | Coupe | ||
Production period: | 2017. March ... 2020. January | ||
Engine: | 1998 cm3 Petrol, 4 cylinders | CO2 emissions: | 134 g/km |
Power: | 184 HP ON 5000 RPM | Torque: | 270 NM ON 1350 RPM |
Gearbox: | Manual gearbox (6 gears) | Drive type: | Rear wheel drive (RWD) |
Maximum speed: | 236 km/h | Acceleration 0-100 km/h: | 7.3 seconds |
Fuel consumption (l/100km): | 5.8 (combined) 7.7 (urban) 4.7 (highway) | ||
Real fuel consumption: | 7.4 l/100km (31.8 MPG) by user reviews from various sources | ||
Fuel tank capacity: | 60 litres (15.9 gallons) | ||
Car dimensions: | 4.64m (length) 1.83m (width) 1.38m (height) | ||
Turning diameter: | 11.3 meters | ||
Trunk capacity: | 445 litres | ||
Gross weight: | 1995 kg |
BMW 420i engine N20B20
Engine reliability and common problems:
Until 2015, engines used to have problems with the timing chain guides, which have been resolved over time. Other problems with this engine are the oil pump performance and its drive chain, as well as cracking of the oil filter housing.Overall, this engine can last around 190,000 to 330,000 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 | 1997 cm3 |
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Number of cylinders | 4 |
Bore (cylinder diameter) | 84 mm |
Stroke length (piston move) | 90.1 mm |
Compression ratio | 10 : 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. More service info |
Timing chain change interval | 100,000 km (recommended) Sometimes manufacturers do not specify timing chain replacement intervals and design chains for engine life. However, once the recommended change interval has been reached, it is recommended to periodically check the condition of the chain and to change the chain if excessive stretching is detected or if unusual noises from the engine or other symptoms occur. |
Fuel system | Injection |
BMW 420i oil type | 5W-30 |
Oil capacity | 5 litres (5.3 quarts) More service info |
Power | 156 - 245 HP ON 5000 RPM |
Torque | 240 - 350 NM ON 1350 RPM |
Start of production (year) | 2011 |
Duration of production | 7 years |
Engine also used on | BMW 5 sērija BMW 3 sērija BMW 1 sērija BMW X3 BMW X1 and 4 other models |
Generally, the use of an engine in several models and its long production run is an indication of the quality of the engine and the success of its design. |
Most often compared to
All BMW 4 series coupe [2017 - 2020] modifications
Modification | Engine | Power | Consumption | Gearbox | Drive type |
---|---|---|---|---|---|
BMW 418i
Mar 2017 — Jan 2020 Most fuel efficient petrol version |
1.5 Petrol | 136 HP | 5.3 l/100km | Manual (6) | Rear wheel |
BMW 418i
Mar 2017 — Jan 2020 Most fuel efficient petrol version |
1.5 Petrol | 136 HP | 5.3 l/100km | Automatic (8) | Rear wheel |
BMW 420i
Most fuel efficient petrol version by real consumption |
2.0 Petrol | 184 HP | - | Manual (6) | Rear wheel |
BMW 420i
Mar 2017 — Jan 2020 Most fuel efficient petrol version by real consumption |
2.0 Petrol | 184 HP | 5.8 l/100km | Manual (6) | Rear wheel |
BMW 420i Mar 2017 — Jan 2020 | 2.0 Petrol | 184 HP | 5.5 l/100km | Automatic (8) | Rear wheel |
BMW 420i xDrive 4x4
Mar 2017 — Jan 2020 Most fuel efficient petrol version by real consumption |
2.0 Petrol | 184 HP | 6.6 l/100km | Manual (6) | All wheel |
BMW 420i xDrive 4x4 Mar 2017 — Jan 2020 | 2.0 Petrol | 184 HP | 5.9 l/100km | Automatic (8) | All wheel |
BMW 430i Mar 2017 — Jan 2020 | 2.0 Petrol | 252 HP | 6.1 l/100km | Manual (6) | Rear wheel |
BMW 430i Jan 2017 — Jan 2020 | 2.0 Petrol | 252 HP | 5.5 l/100km | Automatic (8) | Rear wheel |
BMW 430i xDrive 4x4 Mar 2017 — Jan 2020 | 2.0 Petrol | 252 HP | 5.9 l/100km | Automatic (8) | All wheel |
BMW 418d Jan 2017 — Jan 2020 | 2.0 Diesel | 150 HP | 4.2 l/100km | Manual (6) | Rear wheel |
BMW 418d Mar 2017 — Jan 2020 | 2.0 Diesel | 150 HP | 4.1 l/100km | Automatic (8) | Rear wheel |
BMW 420d
Mar 2017 — Jan 2020 Most fuel efficient diesel version by real consumption |
2.0 Diesel | 190 HP | 4.2 l/100km | Manual (6) | Rear wheel |
BMW 420d
Jan 2017 — Jan 2020 Most fuel efficient diesel version |
2.0 Diesel | 190 HP | 4.0 l/100km | Automatic (8) | Rear wheel |
BMW 420d xDrive 4x4 Jan 2017 — Jan 2020 | 2.0 Diesel | 190 HP | 4.4 l/100km | Manual (6) | All wheel |
BMW 420d xDrive 4x4 Jan 2017 — Jan 2020 | 2.0 Diesel | 190 HP | 4.4 l/100km | Automatic (8) | All wheel |
BMW 425d Mar 2017 — Jan 2020 | 2.0 Diesel | 224 HP | 4.6 l/100km | Manual (6) | Rear wheel |
BMW 425d Mar 2017 — Jan 2020 | 2.0 Diesel | 224 HP | - | Automatic (8) | Rear wheel |
BMW 440i Mar 2017 — Jan 2020 | 3.0 Petrol | 326 HP | 7.4 l/100km | Manual (6) | Rear wheel |
BMW 440i Mar 2017 — Jan 2020 | 3.0 Petrol | 326 HP | 6.6 l/100km | Automatic (8) | Rear wheel |
BMW 440i 4x4 | 3.0 Petrol | 326 HP | - | Manual (6) | All wheel |
BMW 440i xDrive 4x4 Mar 2017 — Jan 2020 | 3.0 Petrol | 326 HP | 7.0 l/100km | Automatic (8) | All wheel |
BMW 430d Mar 2017 — Jan 2020 | 3.0 Diesel | 258 HP | 4.9 l/100km | Automatic (8) | Rear wheel |
BMW 430d xDrive 4x4 Mar 2017 — Jan 2020 | 3.0 Diesel | 258 HP | 5.2 l/100km | Automatic (8) | All wheel |
BMW 435d 4x4
Most dynamic version - 100 km/h in 4.7 seconds |
3.0 Diesel | 313 HP | - | Automatic (8) | All wheel |