Vehicle summary
ULEZ status is estimated based on fuel type and registration year. It may not reflect the actual emission standard of this vehicle. Check with TfL for a definitive answer.
At a glance
This 2012 Hyundai I20 Petrol 1396cc has had 19 MOT tests on record, passing 12 and failing 7 (63% pass rate). It has 184,708 miles on the clock, averaging 15,091 miles per year, above the UK average of 7,400. The 1.4 MPI engine is known for 1. timing chain tensioner wear & premature chain failure and 2. excessive oil consumption & oil sludge buildup.
MOT & Mileage History for RJ12 CMZ
Data from DVSA. Last updated August 2026. Check gov.uk for the latest.
MOT failures recorded
Average miles/year
Gaps in MOT history
Mileage Analysis
Above average| Latest reading | 184,708 miles |
| Reading date | |
| Average per year | 15,091 |
| Mileage consistency | Consistent |
Check RJ12 CMZ
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Full MOT Test History 19 tests on record
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Reported issues for this Hyundai I20
These are the most commonly reported problems on Hyundai I20 models (2008–2014), based on owner reports and workshop data across the UK.
1. Timing Chain Tensioner Wear & Premature Chain Failure
The hydraulic tensioner, which maintains tension on the timing chain, fails prematurely—particularly in high-mileage or poorly-maintained engines. When tensioner pressure drops, the chain loses tension and can rattle or, in severe cases, jump timing or snap entirely.[1][2]
2. Excessive Oil Consumption & Oil Sludge Buildup
The G4FA burns or leaks oil faster than typical, exacerbated by carbon and sludge accumulation in the oil system. Poor oil circulation through blocked compression ring galleries and clogged pickup tubes starves bearing surfaces of lubrication, causing additional wear and further oil consumption.[2][4]
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Vehicle Details
| Registration | RJ12 CMZ |
| Make | Hyundai |
| Model | I20 |
| Colour | White |
| Fuel type | Petrol |
| Engine | 1396cc |
| Year | 2012 |
| First registered | |
| Area code | RJ — Reading, Reading |
| Age identifier | 12 — March 2012 to August 2012 |
More RJ12 C plates
Browse all RJ12 C registrations from Reading.
About RJ12 CMZ
What car is RJ12 CMZ?
RJ12 CMZ is an white Hyundai I20, petrol (1396cc). First registered in Reading in 2012.
What is the mileage of RJ12 CMZ?
The last recorded mileage for RJ12 CMZ was 184,708 miles, recorded on 23 Jun 2026 during its most recent MOT test.
Has RJ12 CMZ passed its MOT?
RJ12 CMZ has had 19 MOT tests with a 63% pass rate (12 passes, 7 failures). It last passed on 23 Jun 2026.
Is RJ12 CMZ ULEZ compliant?
Based on its fuel type and registration year, RJ12 CMZ is likely ULEZ compliant. Petrol post-2005 (Euro 4). This is an estimate based on typical emission standards — confirm with TfL's ULEZ checker for a definitive answer.
How old is RJ12 CMZ?
RJ12 CMZ is approximately 14 years old. Age identifier 12 means registered between 1 March 2012 and 31 August 2012.