BMW Z4: no years to avoid
Based on 35,284 real MOT tests from DVSA records. Each year is compared against every other car first registered the same year — otherwise the numbers would only tell you that older cars fail more, which you knew.
The short answer
No model year stands out as one to avoid. Every year sits within 15% of the failure rate for cars of the same age. The 2009 is the strongest, failing 51% less often than average.
Found a BMW Z4 you like?
Averages tell you what to expect. Its registration tells you what actually happened — every MOT, every advisory, and whether the mileage adds up.
Every Z4 model year
Shaded rows are the years that differ most from other cars of the same age — worse, better.
| Registered | MOT tests | Fail rate | vs same-age cars |
|---|---|---|---|
| 2003 | 2,709 | 29.7% |
18% better
|
| 2004 | 3,312 | 27.0% |
26% better
|
| 2005 | 2,246 | 30.4% |
16% better
|
| 2006 | 3,284 | 24.0% |
34% better
|
| 2007 | 3,283 | 23.2% |
34% better
|
| 2008 | 1,923 | 24.5% |
30% better
|
| 2009 | 2,547 | 16.5% |
51% better
|
| 2010 | 2,019 | 17.9% |
45% better
|
| 2011 | 2,000 | 16.0% |
47% better
|
| 2012 | 1,916 | 17.2% |
39% better
|
| 2013 | 1,605 | 17.6% |
31% better
|
| 2014 | 1,959 | 13.1% |
43% better
|
| 2015 | 1,604 | 12.3% |
37% better
|
| 2016 | 1,240 | 15.1% |
about average
|
| 2019 | 2,067 | 8.7% |
15% better
|
| 2020 | 1,570 | 6.6% |
28% better
|
How this is worked out
Every MOT test recorded by DVSA in 2023 on a BMW Z4, grouped by the year the car was first registered. Retests are excluded, so a car that failed and was fixed still counts as a failure. Each year's rate is then divided by the rate for all cars first registered that year — so 120 means 20% more failures than its contemporaries, not 20% more than a brand new car.
Contains public sector information licensed under the Open Government Licence v3.0.