2018 Peugeot Horizon — MOT failures & pass rate
The 2018 Peugeot Horizon passed 85.9% of its 8,367 recorded MOT tests. All cars of a similar age fail 11.0% of the time, so this is 3.1pp worse than the group it competes with. Failures cluster in lighting & signalling, body, structure & corrosion and visibility.
What the MOT record shows
Lighting & signalling dominates the failure mix at 11.0% of all tests — 5.4 points clear of body, structure & corrosion, so it is the first thing to check.
At component level the recurring items are joints, headlamp aim and stop lamp — joints alone was recorded 332 times.
Condition tracks the odometer closely. Failures run at 11.9% in the 0-30k band and 27.4% in the 150k+ band, a 15.5-point spread — more than double.
Advisories point at the next bill rather than this one: tyres was flagged on 16.8% of tests without failing them.
The trend is worsening — 9.3% of tests failed in 2021 against 16.3% in 2025, the usual pattern as a fleet ages.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 11.0% | 920 |
| 2 | Body, structure & corrosion | 5.6% | 468 |
| 3 | Visibility | 3.0% | 250 |
| 4 | Tyres | 2.6% | 216 |
| 5 | Brakes | 2.3% | 196 |
| 6 | Suspension | 2.0% | 171 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Joints | 332 |
| 2 | Headlamp aim | 311 |
| 3 | Stop lamp | 274 |
| 4 | Headlamp | 223 |
| 5 | Exhaust system | 173 |
| 6 | Horn | 165 |
Top advisory categories
Advisories aren't failures, but they flag work likely needed soon — useful when budgeting.
| # | Category | % of tests with advisory | Tests |
|---|---|---|---|
| 1 | Tyres | 16.8% | 1,409 |
| 2 | Suspension | 11.3% | 946 |
| 3 | Brakes | 7.2% | 605 |
| 4 | Body, structure & corrosion | 7.0% | 590 |
| 5 | Other defects | 5.8% | 483 |
| 6 | Lighting & signalling | 4.8% | 400 |
Failure rate by mileage
Higher-mileage cars tend to fail more — often the most useful guide to real condition.
| Mileage band | Tests | Fail rate |
|---|---|---|
| 0-30k | 5,821 | 11.9% |
| 30-60k | 1,533 | 17.5% |
| 60-90k | 498 | 20.1% |
| 90-120k | 251 | 22.3% |
| 120-150k | 150 | 18.7% |
| 150k+ | 113 | 27.4% |
Failure rate by age
By fuel type
| Fuel | Tests | Fail rate |
|---|---|---|
| Diesel | 7,869 | 14.2% |
| Petrol | 498 | 12.0% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 1,646 | 9.3% |
| 2022 | 1,701 | 13.0% |
| 2023 | 1,766 | 16.1% |
| 2024 | 1,597 | 15.7% |
| 2025 | 1,657 | 16.3% |
What to check before buying a 2018 Horizon
On a 2018 Horizon, lighting & signalling is what the MOT record says goes wrong most — it appeared in 11.0% of tests. Check these areas before you commit.
- Lighting & signalling (11.0% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Body, structure & corrosion (5.6% of tests): The one to take seriously on older cars — corrosion to structural areas can be costly and is an MOT failure. Typical repair: £200–£1,500+.
- Visibility (3.0% of tests): Wipers, washers, mirrors and screen damage — usually inexpensive, but check for chips in the driver's line of sight. Typical repair: £15–£150.
Repair costs are rough UK ballpark ranges to set expectations, not quotes — actual prices vary widely by car, parts and garage.
Frequently asked questions
How many 2018 Peugeot Horizons pass their MOT?
85.9% of the 8,367 2018 Peugeot Horizon MOT tests in this dataset passed — a 14.1% fail rate.
What is the most common MOT failure on a 2018 Peugeot Horizon?
Lighting & signalling, recorded in 11.0% of tests, followed by body, structure & corrosion (5.6%).
Does the 2018 Horizon get worse with mileage?
Its MOT fail rate rises from 11.9% in the 0-30k band to 27.4% in the 150k+ band.
Methodology & source. Based on 8,367 MOT tests. Dataset: DVSA MOT testing data (2021,2022,2023,2024,2025). Data last updated 2026-07-27. Figures reflect MOT-testable defects only — read the methodology for how these are calculated and what they don't measure.