2004 MG ZR 1.8L Petrol · RO04 CNN
2004 MG ZR (1.8L, petrol). First registered 01 Apr 2004. Recorded mileage 70,938 miles. MOT expired on 15 Oct 2022.
- Make & Model
- MG ZR
- Year / Origin
- 2004 · Reading
- Safety Recall
- Unknown
- MOT Status
- Expired on 15 Oct 2022
- Road Tax
- Untaxed (07 Apr 2022)
- Recorded Mileage
- 70,938 mi
- ULEZ Compliance
- Check Required (Pre-Euro 4 Petrol)
- Fuel & Engine
- Petrol · 1.8L
- Reliability Guide
- Common Faults
Thinking of buying this vehicle? Free MOT and tax checks do not cover legal ownership. If outstanding finance exists, finance companies have legal right to repossess without compensation.
RO04 CNN Key Findings
- 21 MOT tests recorded
- Latest MOT passed on 06/10/2021
- 70,938 miles recorded at latest MOT
- 7 historical MOT failures
- 7 defects noted at the latest MOT
- Recurring lighting items (34 mentions)
Derived directly from the recorded DVSA and DVLA data shown on this page.
RO04 CNN MOT History
Interpretation generated from the recorded test data above — not an official DVSA statement and not a substitute for an independent inspection.
21 MOT tests are recorded for this 2004 Mg Zr (RO04 CNN) between June 2007 and October 2021.
The record contains 14 passes and 7 failures.
The most recent test on 06 October 2021 was a pass, although the earlier record includes 7 failures that buyers may want to investigate.
Across all tests, the most frequently flagged areas are: Lighting (34 issues), Tyres (19 issues), Brakes (15 issues), Windscreen (6 issues), Suspension (5 issues). Repeated mentions in one area can indicate an ongoing pattern worth checking in person.
In total 96 advisory notices are recorded. Advisories flag items that passed but may need attention before the next test; they are not evidence of how well the vehicle has been serviced.
Recorded failure items include: “Nearside Front Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7”; “Nearside Stop lamp(s) not working (4.3.1 (a) (ii))”; “Offside Front Tyre tread depth below requirements of 1.6mm (5.2.3 (e))”.
RO04 CNN Mileage History
- 06/06/200720,220 mi
- 02/10/200829,596 mi+9,376 mi
- 24/09/200939,021 mi+9,425 mi
- 14/12/201040,904 mi+1,883 mi
- 14/12/201040,904 mi
- 20/09/201244,956 mi+4,052 mi
- 22/09/201244,956 mi
- 02/10/201356,082 mi+11,126 mi
- 02/10/201356,082 mi
- 16/10/201456,088 mi+6 mi
- 16/10/201456,088 mi
- 08/10/201558,904 mi+2,816 mi
- 03/10/201660,881 mi+1,977 mi
- 03/10/201660,881 mi
- 27/09/201762,727 mi+1,846 mi
- 01/10/201864,950 mi+2,223 mi
- 02/10/201864,951 mi+1 mi
- 25/09/201966,787 mi+1,836 mi
- 25/09/201966,787 mi
- 09/10/202069,321 mi+2,534 mi
- 06/10/202170,938 mi+1,617 mi
Average of roughly 3,538 miles per year across 21 recorded odometer readings.
Technical Specifications
Core Specifications
Identification & Status
Dimensions & Weights
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Known faults for MG MG ZR
Our database tracks 5 specific mechanical faults and recurring failure patterns identified across UK MOT testing stations for this generation.
MOT Roadworthiness: Below Average
This rating reflects historical MOT pass rates and recurring advisory wear patterns from official DVSA test logs. Note that roadworthiness does not verify outstanding finance, insurance write-offs, or stolen records.
Verify lender finance agreements, insurance write-offs, police stolen registers, and mileage rollback.
Common Problems: MG ZR
Known issues reported by owners and MOT testers.
- K-Series Head Gasket Failure (HGF)(Serious)
The K-Series engine is prone to head gasket failure due to its small coolant capacity and plastic locating dowels that allow the head to shift.
- SCU / BCU Failure (Pektron)(Moderate)
Later models (2003+) use a Pektron SCU that controls windows, fobs, and wipers. It is notorious for relay failure.
- Worn Front Suspension(Moderate)
The front suspension bushes and ball joints wear out, leading to vague steering, knocking noises, and poor handling. This is a common MOT failure point and can be exacerbated by hard driving.
- Coil Pack Failure(Moderate)
The ignition coil pack is known for failing on the ZR, causing misfires, rough running, and difficulty starting.
- Door Lock Failure(Moderate)
The door lock actuators, particularly on the driver's door, are known to fail, making it difficult to lock or unlock the car.
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MG ZR Model Intelligence & Reliability
Verified MOT failure trends, buying advice, and technical directory specifications.
Owner-reported defects, recurring MOT failure points, and estimated repair costs.
Browse production generations, registration statistics, and trim variants.
Historical MOT pass rates and DVLA records for 2004 model year cars.
- K-Series Head Gasket Failure (HGF)Serious
The K-Series engine is prone to head gasket failure due to its small coolant capacity and plastic locating dowels that allow the head to shift.
- SCU / BCU Failure (Pektron)Moderate
Later models (2003+) use a Pektron SCU that controls windows, fobs, and wipers. It is notorious for relay failure.
- Worn Front SuspensionModerate
The front suspension bushes and ball joints wear out, leading to vague steering, knocking noises, and poor handling. This is a common MOT failure point and can be exacerbated by hard driving.
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