BMW Z4 2003 fuel consumption
Year-to-year deviations of actual owner-reported average fuel consumption from advertised values
| Year | Gasoline cars | |||
|---|---|---|---|---|
| All carmakers | BMW Z4 | |||
| 2003 | +6% | +8% | ||
| Show all years | ||||
| 2004 | +7% | +8% | ||
| 2005 | +8% | +6% | ||
| 2006 | +9% | +6% | ||
See below for the actual consumption of generations and versions of BMW Z4.
BMW Z4 2003 cabrio fuel economy
| Average advertised fuel consumption for petrol engines | 26.3 MPG 8.9 l/100km |
| Average real-world fuel consumption for petrol engines | 24.7 MPG 9.5 l/100km |
| Average real gasoline consumption difference * | +6% |
According to advertised fuel consumption, a BMW Z4 2003 with automatic transmission consumes on average 0.5 liters per 100 km or 6% more fuel than similar versions with manual gearbox. Based on user-reported real-world fuel consumption, this generation BMW Z4 with automatic transmission consumes around 1 litres per 100 km or 11% more fuel than a version with the same engine but a manual gearbox.
Compared to similar cars of other manufacturers, the BMW Z4 advertised fuel economy is among the best, beating more than 80% of other cars, but according to available user reports on actual consumption, real fuel economy is significantly above average.
The best fuel economy in its class of all the modifications has one with 2.5 petrol engine and manual transmission (BMW Z4 2003 Roadster 2.5i 192 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 Z4 2005 Roadster 2.0i 150 HP manual | 31.4 MPG 7.5 l/100km |
31.8 MPG 7.4 l/100km-1% |
| 2.2 liter petrol engine | ||
| BMW Z4 2003 Roadster 2.2i 170 HP manual | 26.7 MPG 8.8 l/100km |
25.6 MPG 9.2 l/100km+5% |
| BMW Z4 2003 Roadster 2.2i 170 HP automatic | 25.3 MPG 9.3 l/100km |
23.1 MPG 10.2 l/100km+10% |
| 2.5 liter petrol engine | ||
| BMW Z4 2003 Roadster 2.5i 192 HP manual | 26.4 MPG 8.9 l/100km |
24.8 MPG 9.5 l/100km+7% |
| BMW Z4 2003 Roadster 2.5i 192 HP automatic | 24.8 MPG 9.5 l/100km |
22.2 MPG 10.6 l/100km+12% |
| 3.0 liter petrol engine | ||
| BMW Z4 2003 Roadster 3.0i 231 HP manual | 25.8 MPG 9.1 l/100km |
25.0 MPG 9.4 l/100km+3% |
| BMW Z4 2003 Roadster 3.0i 231 HP automatic | 24.8 MPG 9.5 l/100km |
22.8 MPG 10.3 l/100km+8% |
* - 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.