Mz Mastiff Reliability, MOT Pass Rate & Common Faults
Free Mz Mastiff car check
Is the Mz Mastiff reliable? We analysed 1,067 real MOT tests across 110 vehicles to find out.
Got a specific Mz Mastiff? Enter the reg for a free check:
The Mz Mastiff is above average for reliability based on real UK MOT data. Common problems include stop lamp does not illuminate immediately a brake applies, tyre tread depth is below minimum requirements of 1.0mm and reflector on motorcycle missing. Here's everything you need to know before buying a used Mz Mastiff.
Mz Mastiff Number Plates
Number plates registered to a Mz Mastiff. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.
Mz Mastiff MOT Pass Rate by Year
How likely is a Mz Mastiff to pass its MOT? Here's the pass rate for each registration year, newest first.
Mz Mastiff Problems — What Goes Wrong?
The most common reasons a Mz Mastiff fails its MOT, ranked by how often they occur. Check for these problems before you buy.
Mz Mastiff Mileage — What's Normal?
How many miles does a typical Mz Mastiff owner drive per year? Use this to check if a car you're looking at has suspiciously low or high mileage.
Mz Mastiff MOT Data by Registration Year
Full breakdown of pass rate and mileage for each year. Use this to compare the Mz Mastiff year you're looking at.
| Year | Tests | Pass Rate | Low Mi. | Typical Mi. | High Mi. |
|---|---|---|---|---|---|
| 2005 | 74 | 82.4% | 8,739 | 12,168 | 15,998 |
| 2004 | 120 | 90.0% | 8,250 | 12,372 | 18,203 |
| 2003 | 142 | 82.4% | 6,052 | 10,462 | 22,294 |
| 2002 | 275 | 83.6% | 7,400 | 11,768 | 16,126 |
| 2001 | 223 | 83.9% | 9,968 | 15,530 | 22,062 |
| 1999 | 63 | 79.4% | 8,269 | 11,674 | 17,225 |
| 1998 | 108 | 85.2% | 7,679 | 12,007 | 16,243 |
How Long Does a Mz Mastiff Last?
Based on 110 Mz Mastiff vehicles on UK roads.
Mz Mastiff Mileage Distribution
Total mileage recorded across all Mz Mastiff MOT tests. If the car you're looking at is above the 75th percentile, it's done more miles than most.
Best Year to Buy a Used Mz Mastiff
Based on MOT pass rates across all registration years with sufficient test data.
90.0% MOT pass rate from 120 tests
79.4% MOT pass rate from 63 tests
The best year to buy a used Mz Mastiff is 2004, which has the highest MOT pass rate at 90.0% across 120 tests. The 1999 model year has the lowest pass rate at 79.4% — if you're looking at one from that year, budget for potential repairs and get a thorough pre-purchase inspection.
How Does the Mz Mastiff Compare?
MOT pass rates compared to similar models. Click any model for the full breakdown.
| Model | Pass Rate | Tests | Typical Mileage | Lifespan |
|---|---|---|---|---|
| Mz Mastiff THIS CAR | 84.0% | 1,067 | 12,613 mi | 28 yrs |
| Mz Baghira | 83.4% | 3,293 | 15,070 mi | 26 yrs |
| Mz ETZ250 | 88.2% | 2,739 | 26,583 mi | 45 yrs |
| Mz Skorpion | 84.4% | 1,952 | 24,117 mi | 32 yrs |
| Mercedes-benz Cla 180 AMG Line Executive A | 90.3% | 924 | 26,111 mi | — yrs |
Compared to the Mz Baghira (83.4% pass rate) and the Mz ETZ250 (88.2% pass rate), the Mz Mastiff sits in the middle of the pack on MOT reliability.
Found a Mz Mastiff you like?
Run a full vehicle history check on the specific car. See finance, stolen, write-off, mileage and MOT data for that exact vehicle.
Check a specific Mz MastiffShould you buy a used Mz Mastiff?
The Mz Mastiff has an overall MOT pass rate of 84.0% across 1,067 real MOT tests — comfortably above the UK average, which puts it among the more reliable models on UK roads.
The most common problems on the Mz Mastiff are stop lamp does not illuminate immediately a brake applies (20 recorded failures), tyre tread depth is below minimum requirements of 1.0mm (15), and reflector on motorcycle missing (9). These are the faults most likely to cause an MOT failure on this model, so check for them carefully on any test drive or pre-purchase inspection. Many are wear-and-tear items that can be budgeted for, but a car that's already failing on multiple fronts may signal neglected maintenance.
A typical Mz Mastiff owner drives around 626 miles per year. If the car you're looking at is significantly above this, expect more wear on suspension, brakes and tyres. If it's well below, the vehicle may have been sitting unused — check for perished rubber, corroded discs and stale fluids.
In terms of longevity, most Mz Mastiff models stay on UK roads for around 28 years — a strong showing that suggests solid build quality and readily available parts. If you're buying one that's already approaching that window, the data suggests it has plenty of life left provided it's been maintained.
Before committing to a purchase, we recommend running a full vehicle history check on the specific car. This will reveal any outstanding finance, stolen markers, write-off history and mileage discrepancies that the seller may not disclose — and that the MOT data alone can't tell you.