Ktm 400EXC Reliability, MOT Pass Rate & Common Faults
Free Ktm 400EXC car check
Is the Ktm 400EXC reliable? We analysed 995 real MOT tests across 107 vehicles to find out.
Got a specific Ktm 400EXC? Enter the reg for a free check:
The Ktm 400EXC is above average for reliability based on real UK MOT data. Common problems include reflector on motorcycle missing, wheel bearings have excessive free play and shock absorber seal failed and leaking oil. Here's everything you need to know before buying a used Ktm 400EXC.
Ktm 400EXC Number Plates
Number plates registered to a Ktm 400EXC. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.
Ktm 400EXC MOT Pass Rate by Year
How likely is a Ktm 400EXC to pass its MOT? Here's the pass rate for each registration year, newest first.
Ktm 400EXC Problems — What Goes Wrong?
The most common reasons a Ktm 400EXC fails its MOT, ranked by how often they occur. Check for these problems before you buy.
Ktm 400EXC Mileage — What's Normal?
How many miles does a typical Ktm 400EXC owner drive per year? Use this to check if a car you're looking at has suspiciously low or high mileage.
Ktm 400EXC MOT Data by Registration Year
Full breakdown of pass rate and mileage for each year. Use this to compare the Ktm 400EXC year you're looking at.
| Year | Tests | Pass Rate | Low Mi. | Typical Mi. | High Mi. |
|---|---|---|---|---|---|
| 2009 | 100 | 74.0% | 2,482 | 4,778 | 7,167 |
| 2006 | 71 | 81.7% | 2,793 | 4,066 | 6,493 |
| 2005 | 110 | 81.8% | 2,587 | 3,927 | 6,140 |
| 2004 | 213 | 82.2% | 1,377 | 2,944 | 4,802 |
| 2002 | 218 | 76.6% | 485 | 2,184 | 4,123 |
| 2001 | 102 | 82.4% | 2,013 | 3,542 | 4,815 |
How Long Does a Ktm 400EXC Last?
Based on 107 Ktm 400EXC vehicles on UK roads.
Ktm 400EXC Mileage Distribution
Total mileage recorded across all Ktm 400EXC 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 Ktm 400EXC
Based on MOT pass rates across all registration years with sufficient test data.
82.4% MOT pass rate from 102 tests
74.0% MOT pass rate from 100 tests
The best year to buy a used Ktm 400EXC is 2001, which has the highest MOT pass rate at 82.4% across 102 tests. The 2009 model year has the lowest pass rate at 74.0% — if you're looking at one from that year, budget for potential repairs and get a thorough pre-purchase inspection.
How Does the Ktm 400EXC Compare?
MOT pass rates compared to similar models. Click any model for the full breakdown.
| Model | Pass Rate | Tests | Typical Mileage | Lifespan |
|---|---|---|---|---|
| Ktm 400EXC THIS CAR | 79.7% | 995 | 3,388 mi | 25 yrs |
| Ktm 125 | 76.8% | 13,595 | 10,169 mi | 21 yrs |
| Ktm 950 | 86.8% | 11,776 | 15,596 mi | 23 yrs |
| Ktm 640 LC4-E | 83.6% | 9,903 | 8,082 mi | 27 yrs |
| Yamaha Yzf R3 Abs | 88.3% | 1,356 | 6,088 mi | — yrs |
Compared to the Ktm 125 (76.8% pass rate) and the Ktm 950 (86.8% pass rate), the Ktm 400EXC sits in the middle of the pack on MOT reliability.
Found a Ktm 400EXC 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 Ktm 400EXCShould you buy a used Ktm 400EXC?
The Ktm 400EXC has an overall MOT pass rate of 79.7% across 995 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 Ktm 400EXC are reflector on motorcycle missing (18 recorded failures), wheel bearings have excessive free play (17), and shock absorber seal failed and leaking oil (16). 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 Ktm 400EXC owner drives around 318 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 Ktm 400EXC models stay on UK roads for around 25 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.