MOT performance
Hyundai i30 diesel: MOT pass rate and common failures
Of 98,537 MOT tests on diesel Hyundai i30s in 2023–2024 (on average 9.6 years old at test, median 82,200 miles), 61.7% passed first time, against 68.3% of 112,629 petrol Hyundai i30 tests. Allowing for age, mileage and fuel, diesel Hyundai i30s failed 25% more often than comparable cars — 1.25× against 1.16× for the Hyundai i30 as a whole.
98,537 MOT tests on 49,645 vehicles, 2023–2024 · Source: DVSA (Open Government Licence) · Analysis: 73 Auto
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| Figure | Value | Basis |
|---|---|---|
| First-time pass rate | 61.7% | ±0.3 pts (95%), n = 98,537 |
| All Hyundai i30s | 65.3% | n = 211,998 |
| Failures vs similar cars | 1.25× | same age, mileage and fuel = 1.00; Hyundai i30 overall 1.16× |
| Tests with a dangerous defect | 11.8% | n = 98,537 |
| Average age at test | 9.6 years | n = 98,537 |
| Registration years covered | 2007–2021 | DVSA first-use date |
Diesel against the other Hyundai i30 fuels
Official DVSA test results by fuel, with 73 Auto's adjusted ratio (failures against cars of the same age, mileage and fuel).
| Fuel | Tests | Average age | First-time pass | vs similar cars | Dangerous |
|---|---|---|---|---|---|
| Petrol | 112,629 | 9.2 yrs | 68.3% | +7% | 8.8% |
| Diesel | 98,537 | 9.6 yrs | 61.7% | +25% | 11.8% |
Where diesel Hyundai i30s differ
- Body, chassis and structure: diesel Hyundai i30s failed 24% less often than the Hyundai i30 overall, relative to comparable cars (0.45× vs 0.59×).
| Area | Diesel (vs similar) | All Hyundai i30s (vs similar) |
|---|---|---|
| Lights, reflectors and electrical | 16.3% (+44%) | 14.9% (+29%) |
| Brakes | 15.0% (+107%) | 12.3% (+82%) |
| Suspension | 10.0% (-2%) | 8.8% (-8%) |
| Tyres | 8.1% (+13%) | 7.3% (+7%) |
| Steering | 6.9% (+216%) | 5.8% (+192%) |
| Driver's view of the road | 5.2% (+19%) | 5.2% (+12%) |
| Noise, emissions and leaks | 1.8% (-39%) | 1.6% (-47%) |
| Body, chassis and structure | 1.5% (-55%) | 1.9% (-41%) |
| Seat belts and airbags | 0.4% (-53%) | 0.4% (-54%) |
| Road wheels | 0.4% (-17%) | 0.3% (-20%) |
| Registration plates and VIN | 0.4% (+6%) | 0.3% (-10%) |
Most common diesel Hyundai i30 failure items
| Item | Area | Share of tests |
|---|---|---|
| Rbt (sp): efficiency below requirements | Brakes | 6.21% |
| Track rod end: ball joint has excessive play | Steering | 5.50% |
| Stop lamp: not working | Lights, reflectors and electrical | 5.05% |
| Tread depth: tread depth below requirements of 1.6mm | Tyres | 3.71% |
| Position lamp: not working | Lights, reflectors and electrical | 3.71% |
Pass rate by age, by fuel
| Age at test (years) | diesel pass rate (tests) | petrol pass rate (tests) |
|---|---|---|
| 3-4 | 84.4% (1,566) | 87.5% (13,025) |
| 5-6 | 78.4% (9,045) | 83.5% (18,740) |
| 7-8 | 69.1% (28,081) | 73.8% (16,327) |
| 9-10 | 59.2% (24,117) | 64.0% (16,252) |
| 11-12 | 54.2% (20,028) | 57.7% (16,816) |
| 13-15 | 50.1% (14,668) | 54.6% (28,194) |
| 16+ | 45.3% (852) | 51.3% (1,420) |
Hyundai i30 by registration year
Registration-year pages cover every fuel of that year.
- 2008 Hyundai i30 · 51.1%
- 2009 Hyundai i30 · 54.1%
- 2010 Hyundai i30 · 53.1%
- 2011 Hyundai i30 · 55.0%
- 2012 Hyundai i30 · 56.7%
- 2013 Hyundai i30 · 58.6%
- 2014 Hyundai i30 · 63.6%
- 2015 Hyundai i30 · 70.3%
- 2016 Hyundai i30 · 72.8%
- 2017 Hyundai i30 · 81.6%
- 2018 Hyundai i30 · 84.8%
- 2019 Hyundai i30 · 87.7%
- 2020 Hyundai i30 · 86.9%
What this does and doesn't tell you
Fuel is DVSA's recorded fuel type; plug-in and self-charging hybrids are grouped as hybrid. A difference between fuels can come from the engines themselves, or from how the cars are used — diesels typically cover more miles, and the adjusted ratio allows for mileage band but not for every difference in use. For one car, its own MOT history is the better guide: see MOT check.
Check a specific diesel Hyundai i30
Enter a UK registration to see that car's own MOT history and what it is likely to cost to own. Your first check is free and shows the vehicle summary and its headline ownership cost. The category-by-category breakdown is part of a paid check.
UK number plate or 17-character VIN
About this data. These are MOT test results, not a measure of mechanical reliability: a car's MOT outcome reflects its condition on the day, which depends on how it has been maintained and driven as well as how it was built. Figures cover class 4 vehicles (cars and light vans), normal tests only (retests excluded), outcomes pass, fail and pass after rectification at the station; vehicles at least 2.5 years old at test. Tests from 2023-01-01 to 2024-12-30. “Compared with similar cars” means compared with the national rate for cars of the same age, mileage band and fuel. Contains public sector information licensed under the Open Government Licence v3.0. Makes and models are matched to 73 Auto's vehicle catalogue; tests that can't be matched are left out rather than guessed. See how the MOT figures are produced.