Luxury car · 2002–2014 cars
Jeep 300 reliability
The Jeep 300 fails 34.8% of first MOT tests, 18% fewer MOT fails than the average car its age and mileage, based on 13,960 DVSA MOT tests from 2022 to 2024.
Checking a Jeep 300 before you buy?
- first-time MOT fail rate (all cars: 28.4%)
- 34.8%
- first-time MOT fail rate (all cars: 28.4%)
- fails than cars of the same age and mileage
- 18% fewer
- fails than cars of the same age and mileage
- MOT tests analysed, 2022 to 2024
- 13,960
- MOT tests analysed, 2022 to 2024
- typical miles a year, from MOT readings
- 8,200
- typical miles a year, from MOT readings
MOT fail rate by age
How the Jeep 300 ages
Each point is the share of Jeep 300s of that age that failed their MOT first time, against all cars of the same age.
| Age at MOT (years) | Jeep 300 | All cars |
|---|---|---|
| 11 | 32.3% | 34.6% |
| 12 | 31.8% | 37.3% |
| 13 | 38.9% | 39.5% |
| 14 | 37.3% | 41.1% |
| 15 | 36% | 42.3% |
| 16 | 33.8% | 42.9% |
| 17 | 31.7% | 43.4% |
| 18 | 32.9% | 43.5% |
By year
The best and worst Jeep 300 years
2006 cars come out best and 2009 cars worst, once age and mileage are taken into account.
| First registered | Tests | Fail rate | Against same-age cars | Typical mileage |
|---|---|---|---|---|
| 2012 | 233 | 24% | 30% fewer fails | 90,459 |
| 2010 300 | 1,454 | 34.3% | 12% fewer fails | 98,905 |
| 2009 300 | 1,436 | 36.9% | 9% fewer fails | 102,219 |
| 2008 300 | 2,646 | 36.1% | 16% fewer fails | 112,452 |
| 2007 300 | 4,503 | 34.8% | 19% fewer fails | 111,726 |
| 2006 300 | 3,339 | 34.4% | 21% fewer fails | 109,893 |
| 2005 | 329 | 29.5% | 30% fewer fails | 90,653 |
Common problems
What fails most on a Jeep 300
Its weak spot is steering: 92% more fails there than cars of the same age and mileage.
Fail rate by area
- Brakes19.8%68% above avg
- Suspension12.8%24% below avg
- Lights and electrics12.6%38% below avg
- Steering6.9%92% above avg
- Tyres4.2%44% below avg
- Windscreen, wipers and mirrors3.7%46% below avg
- Exhaust, emissions and leaks3.3%47% below avg
- Body, chassis and structure2%74% below avg
- Seat belts and airbags1.2%44% below avg
Average for cars of the same age and mileage
Top MOT failures
- 1
Parking brake efficiency below minimum 5.59% of tests
The parking brake holds the car less well than required, so it may roll on a slope and needs repair.
- 2
Parking brake efficiency under half required 5.48% of tests
The parking brake is well below required strength and is unlikely to hold the car on a slope.
- 3
Suspension arm pin/bush excessively worn 4.71% of tests
Worn suspension arm bushes allow the wheel to move unpredictably, affecting steering, handling and tyre wear.
- 4
Position lamp not working 4.37% of tests
A failed position lamp makes the car harder to see in poor light and is illegal, so it must be repaired.
- 5
Track rod end ball joint excessively worn 4.26% of tests
Worn steering ball joints can affect steering control and safety, so repair is needed before the car is driven.
- 6
Parking brake inoperative on one side 3.36% of tests
The parking brake does not work on one side, so the car may not hold on a slope and needs repair.
- 7
Suspension ball joint excessively worn 3.12% of tests
A worn ball joint can fail and cause loss of steering control, so it must be replaced promptly.
- 8
ABS warning lamp shows a fault 3.05% of tests
A lit ABS warning means the anti-lock system may not work, so wheels could lock during emergency braking.
Most common advisories
Not a fail yet, but worth pricing in: these show up on a Jeep 300's MOT certificate most often.
- Tyre worn close to legal limit12.84%
- Brake disc pitted or scored11.13%
- Brake pipes corroded and greasy10.92%
- Suspension arm pin/bush showing wear10.62%
- Engine oil leak, not excessive10.52%
- Brake pads wearing thin6.53%
Before you buy
What to check on a used Jeep 300
- 1
Parking brake efficiency below minimum
The parking brake holds the car less well than required, so it may roll on a slope and needs repair.
- 2
Parking brake efficiency under half required
The parking brake is well below required strength and is unlikely to hold the car on a slope.
- 3
Suspension arm pin/bush excessively worn
Worn suspension arm bushes allow the wheel to move unpredictably, affecting steering, handling and tyre wear.
- 4
Position lamp not working
A failed position lamp makes the car harder to see in poor light and is illegal, so it must be repaired.
- 5
Every MOT since new
Look for the faults above coming back year after year: it shows how the car has been looked after.
- 6
The mileage record
A typical Jeep 300 covers about 8,200 miles a year. A big gap or a drop between MOTs is a warning sign.
- 7
Finance, stolen and write-off
The records the MOT can't show. A Full Check (£9.99) covers all three before you hand over any money.
Fuel types tested
- Diesel86.9%
- Petrol12.7%
- LPG0.4%
Most common colours
Black, Silver, Grey, Blue, White
Average engine size: 3.2 litres.
Compare
How the Jeep 300 compares with its rivals
| Model | Fail rate | Against same-age cars |
|---|---|---|
| Bentley Arnage | 11.8% | 65% fewer MOT fails than the average car its age |
| Lexus LS | 18.9% | 53% fewer MOT fails than the average car its age |
| Mercedes-Benz CL-Class | 20.8% | 47% fewer MOT fails than the average car its age |
| Jaguar XJR | 23.6% | 36% fewer MOT fails than the average car its age |
| Maserati Ghibli | 14.6% | 32% fewer MOT fails than the average car its age |
| BMW 8 Series | 10.9% | 28% fewer MOT fails than the average car its age |
| Jeep 300 | 34.8% | 18% fewer MOT fails than the average car its age |
Every luxury car ranked in the luxury car reliability index, or all Jeep models.
Questions
Jeep 300 questions, answered
Is the Jeep 300 reliable?
On MOT results, the Jeep 300 is better than average: it fails 34.8% of first MOT tests, 18% fewer MOT fails than the average car its age and mileage. It ranks 14 of 14 luxury car models in our index.
What fails most on a Jeep 300 MOT?
The most common MOT failures on the Jeep 300 are parking brake efficiency below minimum (5.59% of tests), parking brake efficiency under half required (5.48% of tests), suspension arm pin/bush excessively worn (4.71% of tests). By area, brakes fails 19.8% of its tests.
Which Jeep 300 year is the most reliable?
Among years with 1,000+ tests, 2006 cars do best (21% fewer MOT fails than the average car its age) and 2009 cars do worst (9% fewer MOT fails than the average car its age).
How many miles does a Jeep 300 do a year?
A typical Jeep 300 covers about 8,200 miles a year, from the mileage recorded at its MOTs. Check the car you're looking at against that with a free mileage check.
How do I check a Jeep 300 before I buy it?
Enter its registration for a free check of its MOT history, mileage, ULEZ status and tax. Before you pay, a Full Check (£9.99) shows outstanding finance, stolen and write-off records.
Source: DVSA anonymised MOT test results, 2022 to 2024, class 4 vehicles aged 3 to 25, normal tests only. How we compare like with like: our methodology.
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