2015 Dodge Ram — MOT failures & pass rate
332 MOT tests on the 2015 Dodge Ram are in this dataset, and 88.9% of them passed. Against all cars of a similar age (16.3% fail rate), the 2015 Ram comes out 5.2pp better. Failures cluster in brakes, lighting & signalling and emissions & environmental.
What the MOT record shows
No single area dominates — brakes (8.1%) and lighting & signalling (5.7%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are headlamp aim, rbt (sp) and catalyst emissions — headlamp aim alone was recorded 13 times.
Condition tracks the odometer closely. Failures run at 7.3% in the 30-60k band and 14.8% in the 90-120k band, a 7.5-point spread — more than double.
Advisories point at the next bill rather than this one: brakes was flagged on 18.1% of tests without failing them.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Brakes | 8.1% | 27 |
| 2 | Lighting & signalling | 5.7% | 19 |
| 3 | Emissions & environmental | 2.4% | 8 |
| 4 | Suspension | 1.5% | 5 |
| 5 | Visibility | 1.2% | 4 |
| 6 | Tyres | 0.9% | 3 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Headlamp aim | 13 |
| 2 | Rbt (sp) | 12 |
| 3 | Catalyst emissions | 9 |
| 4 | Rear fog lamp | 9 |
| 5 | Service brake performance | 6 |
| 6 | Rigid brake pipes | 5 |
Top advisory categories
Advisories aren't failures, but they flag work likely needed soon — useful when budgeting.
| # | Category | % of tests with advisory | Tests |
|---|---|---|---|
| 1 | Brakes | 18.1% | 60 |
| 2 | Suspension | 13.3% | 44 |
| 3 | Lighting & signalling | 8.7% | 29 |
| 4 | Tyres | 6.9% | 23 |
| 5 | Visibility | 4.5% | 15 |
| 6 | Emissions & environmental | 4.2% | 14 |
Failure rate by mileage
Higher-mileage cars tend to fail more — often the most useful guide to real condition.
| Mileage band | Tests | Fail rate |
|---|---|---|
| 30-60k | 110 | 7.3% |
| 60-90k | 108 | 9.3% |
| 90-120k | 61 | 14.8% |
Failure rate by age
By fuel type
| Fuel | Tests | Fail rate |
|---|---|---|
| Petrol | 275 | 10.2% |
| Diesel | 57 | 15.8% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 75 | 10.7% |
| 2022 | 63 | 9.5% |
| 2023 | 64 | 12.5% |
| 2024 | 66 | 12.1% |
| 2025 | 64 | 10.9% |
What to check before buying a 2015 Ram
On a 2015 Ram, brakes is what the MOT record says goes wrong most — it appeared in 8.1% of tests. Check these areas before you commit.
- Brakes (8.1% of tests): Pads/discs are routine wear; binding, imbalance or corroded pipes are more serious — test for pulling under braking. Typical repair: £100–£350 per axle.
- Lighting & signalling (5.7% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Emissions & environmental (2.4% of tests): More common on older diesels (DPF/EGR) — can be expensive; check for warning lights and smoke. Typical repair: £100–£600.
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 2015 Dodge Rams pass their MOT?
88.9% of the 332 2015 Dodge Ram MOT tests in this dataset passed — a 11.1% fail rate.
What is the most common MOT failure on a 2015 Dodge Ram?
Brakes, recorded in 8.1% of tests, followed by lighting & signalling (5.7%).
Does the 2015 Ram get worse with mileage?
Its MOT fail rate rises from 7.3% in the 30-60k band to 14.8% in the 90-120k band.
Methodology & source. Based on 332 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.