BMW Z4 engine and engine cooling problems by year
31 NHTSA owner complaints name the engine and engine cooling across 6 Z4 model years. The most reported year is 2003 with 11 reports.
| Year | Engine and Engine Cooling reports | Share | Median mileage | |
|---|---|---|---|---|
| 2011 Z4 | 7 | 15% | — | |
| 2009 Z4 | 1 | 5% | — | |
| 2008 Z4 | 2 | 11% | — | |
| 2007 Z4 | 6 | 18% | — | |
| 2006 Z4 | 4 | 4% | — | |
| 2003 Z4 | 11 | 3% | — |
Share is the fraction of that year’s complaints naming the engine and engine cooling. Raw counts are not adjusted for sales volume — years that sold more units naturally accumulate more reports.