Suzuki GN400 Reliability, MOT Pass Rate & Common Faults
Free Suzuki GN400 car check
Is the Suzuki GN400 reliable? We analysed 654 real MOT tests across 131 vehicles to find out.
Got a specific Suzuki GN400? Enter the reg for a free check:
The Suzuki GN400 is above average for reliability based on real UK MOT data. Common problems include shock absorber seal failed and leaking oil, stop lamp does not illuminate immediately a brake applies and position lamp does not illuminate immediately when it is switched on. Here's everything you need to know before buying a used Suzuki GN400.
Suzuki GN400 Number Plates
Number plates registered to a Suzuki GN400. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.
Suzuki GN400 MOT Pass Rate by Year
How likely is a Suzuki GN400 to pass its MOT? Here's the pass rate for each registration year, newest first.
Suzuki GN400 Problems — What Goes Wrong?
The most common reasons a Suzuki GN400 fails its MOT, ranked by how often they occur. Check for these problems before you buy.
Suzuki GN400 Mileage — What's Normal?
How many miles does a typical Suzuki GN400 owner drive per year? Use this to check if a car you're looking at has suspiciously low or high mileage.
Suzuki GN400 MOT Data by Registration Year
Full breakdown of pass rate and mileage for each year. Use this to compare the Suzuki GN400 year you're looking at.
| Year | Tests | Pass Rate | Low Mi. | Typical Mi. | High Mi. |
|---|---|---|---|---|---|
| 1982 | 417 | 82.5% | 9,984 | 21,957 | 31,220 |
| 1981 | 127 | 83.5% | 14,269 | 22,169 | 30,887 |
How Long Does a Suzuki GN400 Last?
Based on 131 Suzuki GN400 vehicles on UK roads.
Suzuki GN400 Mileage Distribution
Total mileage recorded across all Suzuki GN400 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 Suzuki GN400
Based on MOT pass rates across all registration years with sufficient test data.
83.5% MOT pass rate from 127 tests
82.5% MOT pass rate from 417 tests
The best year to buy a used Suzuki GN400 is 1981, which has the highest MOT pass rate at 83.5% across 127 tests. The 1982 model year has the lowest pass rate at 82.5% — if you're looking at one from that year, budget for potential repairs and get a thorough pre-purchase inspection.
How Does the Suzuki GN400 Compare?
MOT pass rates compared to similar models. Click any model for the full breakdown.
| Model | Pass Rate | Tests | Typical Mileage | Lifespan |
|---|---|---|---|---|
| Suzuki GN400 THIS CAR | 81.5% | 654 | 21,957 mi | 45 yrs |
| Suzuki Swift | 76.1% | 2,247,517 | 51,601 mi | 31 yrs |
| Suzuki Alto | 74% | 1,154,186 | 41,167 mi | 28 yrs |
| Suzuki Grand Vitara | 76.2% | 1,025,634 | 67,542 mi | 28 yrs |
| Mercedes-benz E300AMGLN Nt ED Prm+d MHEV4M A | 80.9% | 472 | 25,942 mi | — yrs |
Compared to the Suzuki Swift (76.1% pass rate) and the Suzuki Alto (74.0% pass rate), the Suzuki GN400 outperforms both on MOT reliability.
Found a Suzuki GN400 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 Suzuki GN400Should you buy a used Suzuki GN400?
The Suzuki GN400 has an overall MOT pass rate of 81.5% across 654 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 Suzuki GN400 are shock absorber seal failed and leaking oil (13 recorded failures), stop lamp does not illuminate immediately a brake applies (12), and position lamp does not illuminate immediately when it is switched on (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 Suzuki GN400 owner drives around 258 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 Suzuki GN400 models stay on UK roads for around 45 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.