2012 Chrysler-Jeep 300 — MOT failures & pass rate
Across 353 MOT tests, the 2012 Chrysler-Jeep 300 recorded a 77.0% pass rate. That is 1.4 percentage points worse than all cars of a similar age, which fail at 21.5%. Failures cluster in brakes, steering and suspension.
What the MOT record shows
Brakes dominates the failure mix at 11.9% of all tests — 4.3 points clear of steering, so it is the first thing to check.
At component level the recurring items are rbt (sp), track rod end and pins and bushes — rbt (sp) alone was recorded 31 times.
A 150k+ example is materially riskier than a 30-60k one: 25.0% versus 14.7%.
Advisories point at the next bill rather than this one: tyres was flagged on 23.2% of tests without failing them.
The trend is worsening — 20.3% of tests failed in 2021 against 27.4% in 2025, the usual pattern as a fleet ages.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Brakes | 11.9% | 42 |
| 2 | Steering | 7.6% | 27 |
| 3 | Suspension | 7.1% | 25 |
| 4 | Tyres | 5.4% | 19 |
| 5 | Lighting & signalling | 4.0% | 14 |
| 6 | Visibility | 2.8% | 10 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Rbt (sp) | 31 |
| 2 | Track rod end | 28 |
| 3 | Pins and bushes | 17 |
| 4 | Tread depth | 14 |
| 5 | Parking brake performance | 14 |
| 6 | Ball joint | 9 |
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 | 23.2% | 82 |
| 2 | Brakes | 16.4% | 58 |
| 3 | Suspension | 16.4% | 58 |
| 4 | Steering | 11.3% | 40 |
| 5 | Lighting & signalling | 5.1% | 18 |
| 6 | Other defects | 3.7% | 13 |
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 | 68 | 14.7% |
| 60-90k | 94 | 24.5% |
| 90-120k | 99 | 24.2% |
| 120-150k | 55 | 29.1% |
| 150k+ | 32 | 25.0% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 79 | 20.3% |
| 2022 | 76 | 23.7% |
| 2023 | 74 | 25.7% |
| 2024 | 62 | 17.7% |
| 2025 | 62 | 27.4% |
What to check before buying a 2012 300
On a 2012 300, brakes is what the MOT record says goes wrong most — it appeared in 11.9% of tests. Check these areas before you commit.
- Brakes (11.9% 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.
- Steering (7.6% of tests): Play, leaks or worn track rod ends — affects handling and is a safety item. Typical repair: £150–£500.
- Suspension (7.1% of tests): Worn drop links, bushes, springs or shocks — listen for knocks over bumps and check for uneven tyre wear. Typical repair: £150–£450 per corner.
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 2012 Chrysler-Jeep 300s pass their MOT?
77.0% of the 353 2012 Chrysler-Jeep 300 MOT tests in this dataset passed — a 22.9% fail rate.
What is the most common MOT failure on a 2012 Chrysler-Jeep 300?
Brakes, recorded in 11.9% of tests, followed by steering (7.6%).
Does the 2012 300 get worse with mileage?
Its MOT fail rate rises from 14.7% in the 30-60k band to 25.0% in the 150k+ band.
Methodology & source. Based on 353 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.