2020 BMW Z4: MOT pass rate and reliability
91% of 2020 BMW Z4s pass the MOT first time, measured across 1,542 DVSA tests on that model year alone. The average one had covered 22,512 miles.
How the 2020 compares
- Against all BMW Z4s (80.5%, 35,318 tests): +10.5 points
- Against all 2020 cars (89.4%): +1.6 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 2020 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 2020 Z4
The 2020 is one of the stronger years for this model, passing 10.5 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 a 6-year-old car fails on
A 2020 car is 6 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 low mileage, which usually means light urban use. Short journeys are harder on batteries, brakes and exhausts than motorway miles, so do not assume low miles means low wear. On a 2020 BMW Z4 the average at test was 22,512 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 2020 car against a newer one tells you very little.
Nearby model years
- 2015 BMW Z4 - 86.4%
- 2016 BMW Z4 - 85.1%
- 2019 BMW Z4 - 90.5%
- 2021 BMW Z4 - 91.5%