Infiniti Ex Reliability, MOT Pass Rate & Common Faults
Free Infiniti Ex car check
Is the Infiniti Ex reliable? We analysed 2,014 real MOT tests across 162 vehicles to find out.
Got a specific Infiniti Ex? Enter the reg for a free check:
The Infiniti Ex is above average for reliability based on real UK MOT data. Here's everything you need to know before buying a used Infiniti Ex.
Infiniti Ex Number Plates
Number plates registered to a Infiniti Ex. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.
Infiniti Ex MOT Pass Rate by Year
How likely is a Infiniti Ex to pass its MOT? Here's the pass rate for each registration year, newest first.
Infiniti Ex Problems — What Goes Wrong?
The most common reasons a Infiniti Ex fails its MOT, ranked by how often they occur. Check for these problems before you buy.
Infiniti Ex Common Faults & Problems
These are the most common serious faults found on Infiniti Ex models during MOT testing — flagged as dangerous or major failures that need immediate attention.
Infiniti Ex Mileage — What's Normal?
How many miles does a typical Infiniti Ex owner drive per year? Use this to check if a car you're looking at has suspiciously low or high mileage.
Infiniti Ex MOT Data by Registration Year
Full breakdown of pass rate and mileage for each year. Use this to compare the Infiniti Ex year you're looking at.
| Year | Tests | Pass Rate | Low Mi. | Typical Mi. | High Mi. |
|---|---|---|---|---|---|
| 2014 | 131 | 90.8% | 34,764 | 49,842 | 74,104 |
| 2013 | 99 | 86.9% | 33,694 | 46,800 | 63,011 |
| 2012 | 425 | 86.1% | 45,501 | 65,582 | 83,975 |
| 2011 | 663 | 83.1% | 44,613 | 67,441 | 87,992 |
| 2010 | 521 | 85.6% | 43,408 | 68,429 | 90,140 |
| 2009 | 132 | 78.8% | 36,048 | 65,810 | 83,188 |
How Long Does a Infiniti Ex Last?
Based on 162 Infiniti Ex vehicles on UK roads.
Infiniti Ex Mileage Distribution
Total mileage recorded across all Infiniti Ex 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 Infiniti Ex
Based on MOT pass rates across all registration years with sufficient test data.
90.8% MOT pass rate from 131 tests
78.8% MOT pass rate from 132 tests
The best year to buy a used Infiniti Ex is 2014, which has the highest MOT pass rate at 90.8% across 131 tests. The 2009 model year has the lowest pass rate at 78.8% — if you're looking at one from that year, budget for potential repairs and get a thorough pre-purchase inspection.
How Does the Infiniti Ex Compare?
MOT pass rates compared to similar models. Click any model for the full breakdown.
| Model | Pass Rate | Tests | Typical Mileage | Lifespan |
|---|---|---|---|---|
| Infiniti Ex THIS CAR | 84.6% | 2,014 | 65,789 mi | 17 yrs |
| Infiniti Q30 | 87.7% | 37,562 | 44,785 mi | 10 yrs |
| Infiniti Q50 | 83.2% | 23,512 | 56,220 mi | 12 yrs |
| Infiniti Fx | 85.4% | 6,374 | 69,263 mi | 17 yrs |
| Peugeot 206 Look | 73.7% | 1,004 | 79,008 mi | — yrs |
Compared to the Infiniti Q30 (87.7% pass rate) and the Infiniti Q50 (83.2% pass rate), the Infiniti Ex sits in the middle of the pack on MOT reliability.
Found a Infiniti Ex 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 Infiniti ExShould you buy a used Infiniti Ex?
The Infiniti Ex has an overall MOT pass rate of 84.6% across 2,014 real MOT tests — comfortably above the UK average, which puts it among the more reliable models on UK roads.
The most common failure point is brake pad(s) less than 1.5 mm thick with 16 recorded occurrences. Check for this on any test drive or pre-purchase inspection.
On the safety side, the most frequently flagged dangerous fault is tyre tread depth below requirements of 1.6mm. Dangerous faults cause an immediate MOT failure and mean the vehicle is not roadworthy until repaired. If you're viewing a Infiniti Ex with an expired or recently passed MOT, ask the seller whether any dangerous faults were found and fixed during the last test.
A typical Infiniti Ex owner drives around 6,370 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 Infiniti Ex models stay on UK roads for around 17 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.