BMW 4 series 2020 fuel consumption
BMW 4 series from 2020 to 2021 real fuel consumption according to user reports is approximately 33% higher compared to advertised fuel consumption. For petrol engines real consumption is in average 30% higher, but for diesel engines is approximately 35% higher. Since 2020 the BMW 4 series average difference between owner-reported real-world fuel consumption and declared fuel economy has been slightly above industry average.
Year-to-year deviations of actual owner-reported average fuel consumption from advertised values
| Year | Gasoline cars | Diesel cars | ||
|---|---|---|---|---|
| All carmakers | BMW 4 series | All carmakers | BMW 4 series | |
| 2020 | +27% | +30% | +36% | +39% |
| Show all years | ||||
| 2021 | +26% | +30% | +37% | +39% |
See below for the actual consumption of generations and versions of BMW 4 series.
2020
BMW 4 series 2020 coupe fuel economy
| Average advertised fuel consumption for petrol engines | 36.5 MPG 6.5 l/100km |
| Average real-world fuel consumption for petrol engines | 28.2 MPG 8.4 l/100km |
| Average real gasoline consumption difference * | +29% |
| Average advertised fuel consumption for diesel engines | 53.5 MPG 4.4 l/100km |
| Average real-world fuel consumption for diesel engines | 38.6 MPG 6.1 l/100km |
| Average real diesel consumption difference * | +39% |
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 420i 184 HP automatic | 40.6 MPG 5.8 l/100km |
31.4 MPG 7.5 l/100km+29% |
| 2.0 liter diesel engine | ||
| BMW 420d 190 HP automatic | 56.0 MPG 4.2 l/100km |
38.6 MPG 6.1 l/100km+45% |
| BMW 420d xDrive 190 HP 4x4 automatic | 51.1 MPG 4.6 l/100km |
38.6 MPG 6.1 l/100km+33% |
| 3.0 liter petrol engine | ||
| BMW M440i AT xDrive 374 HP 4x4 automatic | 33.1 MPG 7.1 l/100km |
25.6 MPG 9.2 l/100km+30% |
* - 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.
User-reported fuel consumption may not accurately represent all users' experiences due to variables such as driving conditions, driving style, technical condition of the vehicle, and other circumstances. Thus, it should not be relied upon as a representative indicator.