BMW Z4 electrical system problems by year
57 NHTSA owner complaints name the electrical system across 8 Z4 model years. The most reported year is 2004 with 14 reports.
| Year | Electrical System reports | Share | Median mileage | |
|---|---|---|---|---|
| 2011 Z4 | 3 | 7% | — | |
| 2009 Z4 | 2 | 9% | — | |
| 2008 Z4 | 2 | 11% | — | |
| 2007 Z4 | 4 | 12% | — | |
| 2006 Z4 | 13 | 14% | 62,525 mi | |
| 2005 Z4 | 6 | 3% | — | |
| 2004 Z4 | 14 | 3% | 56,000 mi | |
| 2003 Z4 | 13 | 3% | 67,625 mi |
Share is the fraction of that year’s complaints naming the electrical system. Raw counts are not adjusted for sales volume — years that sold more units naturally accumulate more reports.