2015 BMW Z4: MOT pass rate and reliability
86.4% of 2015 BMW Z4s pass the MOT first time, measured across 1,608 DVSA tests on that model year alone. The average one had covered 47,278 miles.
How the 2015 compares
- Against all BMW Z4s (80.5%, 35,318 tests): +5.9 points
- Against all 2015 cars (78.3%): +8.1 points
- National first-time pass rate, all cars and years: 77%
Every BMW Z4 model year
Pass rates fall as cars age, so the only fair comparison for a 2015 car is other cars of the same age. The full run for the BMW Z4:
| Year | Pass rate | Tests | Avg mileage |
|---|---|---|---|
| 2003 | 73% | 2,526 | 98,003 |
| 2004 | 74.4% | 3,097 | 95,934 |
| 2005 | 70.8% | 2,096 | 94,240 |
| 2006 | 74.1% | 3,042 | 89,267 |
| 2007 | 76.5% | 3,134 | 87,019 |
| 2008 | 75.1% | 1,842 | 80,827 |
| 2009 | 82.9% | 2,495 | 74,777 |
| 2010 | 82.8% | 1,979 | 71,437 |
| 2011 | 83.9% | 1,986 | 65,807 |
| 2012 | 82.6% | 1,889 | 63,948 |
| 2013 | 83.4% | 1,580 | 58,506 |
| 2014 | 84.5% | 1,927 | 53,362 |
| 2015 | 86.4% | 1,608 | 47,278 |
| 2016 | 85.1% | 1,222 | 40,803 |
| 2019 | 90.5% | 2,034 | 26,034 |
| 2020 | 91% | 1,542 | 22,512 |
| 2021 | 91.5% | 1,107 | 18,769 |
What this means if you are buying a 2015 Z4
The 2015 is one of the stronger years for this model, passing 5.9 points more often than the BMW Z4 average. That is a point in its favour, though condition and service history still matter more than the model year. Check the exact car with the free MOT history checker before you buy, and run its VIN and mileage through our free VIN decoder and clocking check.
What an 11-year-old car fails on
A 2015 car is 11 years old now, and age drives the failure mix more than the badge does. Across all cars tested, these are the categories that actually cause failures:
- Lights and electrical: 10.36% of all cars tested
- Suspension: 8.65% of all cars tested
- Tyres: 6.23% of all cars tested
- Brakes: 6.1% of all cars tested
- Visibility: wipers, washers, glass: 4.65% of all cars tested
- Body, chassis and structure: 3.18% of all cars tested
That is below average for a car this age, worth a mileage-consistency check since an unusually low reading is sometimes clocking rather than luck. On a 2015 BMW Z4 the average at test was 47,278 miles, so treat anything far above that as a car that has worked harder than its peers, and anything far below as one worth checking for the faults that come from standing still.
The strongest year for this model is 2021 at 91.5%, and the weakest in our data is 2005 at 70.8%. That 20.7 point spread across the model's life is why comparing a 2015 car against a newer one tells you very little.
Nearby model years
- 2012 BMW Z4 - 82.6%
- 2013 BMW Z4 - 83.4%
- 2014 BMW Z4 - 84.5%
- 2016 BMW Z4 - 85.1%
- 2019 BMW Z4 - 90.5%
- 2020 BMW Z4 - 91%