BMW Z4 2009 fuel consumption
Year-to-year deviations of actual owner-reported average fuel consumption from advertised values
| Year | Gasoline cars | |||
|---|---|---|---|---|
| All carmakers | BMW Z4 | |||
| 2009 | +14% | +18% | ||
| Show all years | ||||
| 2010 | +16% | +21% | ||
| 2011 | +19% | +23% | ||
| 2012 | +21% | +23% | ||
| 2013 | +23% | +23% | ||
See below for the actual consumption of generations and versions of BMW Z4.
BMW Z4 2009 cabrio fuel economy
| Average advertised fuel consumption for petrol engines | 30.2 MPG 7.8 l/100km |
| Average real-world fuel consumption for petrol engines | 24.7 MPG 9.5 l/100km |
| Average real gasoline consumption difference * | +23% |
According to advertised fuel consumption, a BMW Z4 2009 with automatic transmission consumes on average 0.3 liters per 100 km or 5% 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 0.3 litres per 100 km or 4% 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 significantly above average, but according to available user reports on actual consumption, real 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 petrol engine and manual transmission (BMW Z4 2011 2.0 28i 245 HP). However, of all modifications the best advertised fuel economy in its class has BMW Z4 with 3.0 petrol engine and manual transmission (BMW Z4 2009 3.0 Roadster sDrive35i 306 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 2011 2.0 20i 184 HP manual | 34.6 MPG 6.8 l/100km |
28.7 MPG 8.2 l/100km+21% |
| BMW Z4 2011 2.0 20i 184 HP automatic | 34.6 MPG 6.8 l/100km |
27.7 MPG 8.5 l/100km+25% |
| BMW Z4 2011 2.0 28i 245 HP manual | 34.6 MPG 6.8 l/100km |
27.0 MPG 8.7 l/100km+28% |
| BMW Z4 2011 2.0 28i 245 HP automatic | 34.6 MPG 6.8 l/100km |
25.8 MPG 9.1 l/100km+34% |
| 2.5 liter petrol engine | ||
| BMW Z4 2009 2.5 Roadster sDrive23i 204 HP manual | 27.7 MPG 8.5 l/100km |
26.7 MPG 8.8 l/100km+4% |
| BMW Z4 2009 2.5 Roadster sDrive23i 204 HP automatic | 28.7 MPG 8.2 l/100km |
25.3 MPG 9.3 l/100km+13% |
| 3.0 liter petrol engine | ||
| BMW Z4 2009 3.0 Roadster sDrive30i 258 HP manual | 27.7 MPG 8.5 l/100km |
24.5 MPG 9.6 l/100km+13% |
| BMW Z4 2009 3.0 Roadster sDrive30i 258 HP automatic | 28.3 MPG 8.3 l/100km |
23.8 MPG 9.9 l/100km+19% |
| BMW Z4 2009 3.0 Roadster sDrive35i 306 HP manual | 33.6 MPG 7.0 l/100km |
22.8 MPG 10.3 l/100km+47% |
| BMW Z4 2009 3.0 Roadster sDrive35i 306 HP automatic | 26.1 MPG 9.0 l/100km |
22.8 MPG 10.3 l/100km+14% |
| BMW Z4 2010 3.0 Roadster sDrive35is 340 HP automatic | 26.1 MPG 9.0 l/100km |
19.4 MPG 12.1 l/100km+34% |
* - 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.