BMW 3 series 2018 fuel consumption
Year-to-year deviations of actual owner-reported average fuel consumption from advertised values
| Year | Gasoline cars | Diesel cars | ||
|---|---|---|---|---|
| All carmakers | BMW 3 series | All carmakers | BMW 3 series | |
| 2018 | +28% | +34% | +39% | +36% |
| Show all years | ||||
| 2019 | +28% | +34% | +37% | +36% |
| 2020 | +27% | +34% | +37% | +36% |
| 2021 | +26% | +34% | +37% | +30% |
See below for the actual consumption of generations and versions of BMW 3 series.
BMW 3 series 2018 Touring G21 wagon fuel economy
| Average advertised fuel consumption for petrol engines | 38.2 MPG 6.2 l/100km |
| Average real-world fuel consumption for petrol engines | 28.2 MPG 8.3 l/100km |
| Average real gasoline consumption difference * | +35% |
| Average advertised fuel consumption for diesel engines | 49.5 MPG 4.8 l/100km |
| Average real-world fuel consumption for diesel engines | 37.0 MPG 6.4 l/100km |
| Average real diesel consumption difference * | +37% |
According to advertised fuel consumption, a BMW 3 series 2018 with automatic transmission consumes on average 0.2 liters per 100 km or 4% less fuel than similar versions with manual gearbox. Based on user-reported real-world fuel consumption, this generation BMW 3 series with automatic transmission consumes around 0.4 litres per 100 km or 7% more fuel than a version with the same engine but a manual gearbox.
Compared to similar cars from other manufacturers, the BMW 3 series fuel economy is significantly above average. The best real fuel economy in its class according to user reviews of all the modifications has modification with 2.0 diesel engine and manual transmission (BMW 318d 150 HP). However, of all modifications the best advertised fuel economy in its class has BMW 3 series with 2.0 petrol engine and automatic transmission (BMW 330i 258 HP).
The table below shows the real and claimed fuel consumption and the differences for specific versions.
| Modification | Claimed consumption | Real consumption |
|---|---|---|
| 2.0 liter petrol engine | ||
| BMW 318i 156 HP automatic | 31.8 MPG 7.4 l/100km |
|
| BMW 320i 184 HP automatic | 29.0 MPG 8.1 l/100km |
|
| BMW 330i xDrive 258 HP AWD automatic | 37.3 MPG 6.3 l/100km |
28.3 MPG 8.3 l/100km+32% |
| BMW 330i 258 HP automatic | 39.2 MPG 6.0 l/100km |
28.3 MPG 8.3 l/100km+38% |
| 2.0 liter diesel engine | ||
| BMW 318d 150 HP manual | 42.0 MPG 5.6 l/100km |
|
| BMW 318d 150 HP automatic | 39.9 MPG 5.9 l/100km |
|
| BMW 320d xDrive 190 HP AWD automatic | 51.1 MPG 4.6 l/100km |
36.2 MPG 6.5 l/100km+41% |
| BMW 320d 190 HP manual | 51.1 MPG 4.6 l/100km |
39.2 MPG 6.0 l/100km+30% |
| BMW 320d 190 HP automatic | 53.5 MPG 4.4 l/100km |
36.2 MPG 6.5 l/100km+48% |
| 3.0 liter petrol engine | ||
| BMW M340i 374 HP AWD automatic | 24.5 MPG 9.6 l/100km |
|
| 3.0 liter diesel engine | ||
| BMW 330d xDrive 265 HP AWD automatic | 43.6 MPG 5.4 l/100km |
33.6 MPG 7.0 l/100km+30% |
| BMW 330d 265 HP automatic | 33.6 MPG 7.0 l/100km |
|
BMW 3 series 2018 G20 sedan fuel economy
| Average advertised fuel consumption for petrol engines | 30.0 MPG 7.9 l/100km |
| Average real-world fuel consumption for petrol engines | 28.3 MPG 8.3 l/100km |
| Average real gasoline consumption difference * | +32% |
| Average advertised fuel consumption for diesel engines | 50.4 MPG 4.7 l/100km |
| Average real-world fuel consumption for diesel engines | 37.3 MPG 6.3 l/100km |
| Average real diesel consumption difference * | +34% |
According to advertised fuel consumption, a BMW 3 series 2018 with automatic transmission consumes on average 0.2 liters per 100 km or 4% less fuel than similar versions with manual gearbox. Based on user-reported real-world fuel consumption, this generation BMW 3 series with automatic transmission consumes around 0.2 litres per 100 km or 4% more fuel than a version with the same engine but a manual gearbox.
The best real fuel economy in its class according to user reviews of all the modifications has modification with 2.0 diesel engine and manual transmission (BMW 318d 150 HP). However, of all modifications the best advertised fuel economy in its class has BMW 3 series with 2.0 petrol engine and automatic transmission (BMW 330i 258 HP).
The table below shows the real and claimed fuel consumption and the differences for specific versions.
| Modification | Claimed consumption | Real consumption |
|---|---|---|
| 2.0 liter petrol engine | ||
| BMW 318i 156 HP automatic | 31.8 MPG 7.4 l/100km |
|
| BMW 320i 184 HP automatic | 29.0 MPG 8.1 l/100km |
|
| BMW 320i 184 HP AWD automatic | 29.0 MPG 8.1 l/100km |
|
| BMW 330i 258 HP automatic | 38.6 MPG 6.1 l/100km |
28.3 MPG 8.3 l/100km+36% |
| BMW 330i xDrive 258 HP AWD automatic | 36.2 MPG 6.5 l/100km |
28.3 MPG 8.3 l/100km+28% |
| 2.0 liter diesel engine | ||
| BMW 318d 150 HP manual | 42.0 MPG 5.6 l/100km |
|
| BMW 318d 150 HP automatic | 39.9 MPG 5.9 l/100km |
|
| BMW 320d 190 HP manual | 50.0 MPG 4.7 l/100km |
39.2 MPG 6.0 l/100km+28% |
| BMW 320d 190 HP automatic | 52.3 MPG 4.5 l/100km |
38.6 MPG 6.1 l/100km+36% |
| BMW 320d xDrive 190 HP AWD automatic | 49.0 MPG 4.8 l/100km |
35.6 MPG 6.6 l/100km+38% |
| 3.0 liter petrol engine | ||
| BMW M340i 374 HP AWD automatic | 24.5 MPG 9.6 l/100km |
|
| BMW M340i (382 Hp) Automatic 382 HP automatic | 25.0 MPG 9.4 l/100km |
|
| BMW M340i (382 Hp) xDrive Automatic 382 HP AWD automatic | 25.0 MPG 9.4 l/100km |
|
| 3.0 liter diesel engine | ||
| BMW 330d 265 HP AWD automatic | 33.6 MPG 7.0 l/100km |
|
| BMW 330d 265 HP automatic | 33.6 MPG 7.0 l/100km |
|
* - Difference between advertised and user reported fuel economy has been calculated taking into account only those car versions for which information is available both on the fuel consumption specified by the manufacturer and reported by users.