2003 Mazda MX-5 1.6L Petrol · J631 TNF
2003 Mazda MX-5 (1.6L, petrol). First registered 01 Oct 2003. Recorded mileage 108,153 miles. MOT valid until 13 Jul 2027. Taxed until 01 Jul 2027.
- Make & Model
- MAZDA MX-5
- Year / Origin
- 2003
- Safety Recall
- Unknown
- MOT Status
- Valid until 13 Jul 2027
- Road Tax
- Taxed (01 Jul 2027)
- Recorded Mileage
- 108,153 mi
- ULEZ Compliance
- Likely ULEZ Compliant (Early Euro 4)
- Fuel & Engine
- Petrol · 1.6L
- 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.
J631 TNF Key Findings
- 2 MOT tests recorded
- Latest MOT passed on 15/07/2026
- 108,153 miles recorded at latest MOT
- 1 historical MOT failure
- 6 defects noted at the latest MOT
- Recurring suspension items (12 mentions)
Derived directly from the recorded DVSA and DVLA data shown on this page.
J631 TNF MOT History
Interpretation generated from the recorded test data above — not an official DVSA statement and not a substitute for an independent inspection.
2 MOT tests are recorded for this 2003 Mazda Mx-5 (J631 TNF) between July 2026 and July 2026.
The record contains 1 pass and 1 failure.
The most recent test on 15 July 2026 was a pass, although the earlier record includes 1 failure that buyers may want to investigate.
Across all tests, the most frequently flagged areas are: Suspension (12 issues), Lighting (2 issues), Brakes (1 issue), Windscreen (1 issue). Repeated mentions in one area can indicate an ongoing pattern worth checking in person.
In total 12 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: “Central Rear Registration plate lamp inoperative in the case of a single lamp or all lamps (4.7.1 (b) (ii))”; “Offside Front Windscreen washer not working (3.5 (a))”; “Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii))”.
J631 TNF Mileage History
- 14/07/2026108,153 mi
- 15/07/2026108,153 mi
Average of roughly 0 miles per year across 2 recorded odometer readings.
Technical Specifications
Core Specifications
Identification & Status
Dimensions & Weights
Diagnostic & Valuation Intelligence
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Known faults for Mazda Mazda MX-5 (NB)
Our database tracks 3 specific mechanical faults and recurring failure patterns identified across UK MOT testing stations for this generation.
MOT Roadworthiness: Good
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.
Buyer's Guide & Inspection Advisory
Expert automotive synthesis from historical MOT defect records and market benchmarks.
Our Verdict
Approach this 1991 Mazda MX-5 with caution, as its most recent MOT test exposed multiple safety-related failures that were only cleared after a re-test the following day. The corrosion flagged across the suspension and springs, combined with a 13-year gap in recorded testing, means a thorough independent inspection is essential before purchase.
Given the failed MOT on 14 July 2026 for Nearside Front headlamp on dipped beam, Offside Front direction indicator, windscreen washer and parking brake efficiency below requirements, ask the seller for evidence of the remedial work carried out for the 15 July pass and confirm it was a genuine repair rather than a temporary fix. The 13-year absence of MOT records between April 2013 and July 2026 means you should scrutinise the V5C, any old tax discs and service receipts to establish whether the car was off the road, exported or simply untaxed and unused. Negotiate on price to reflect the extensive corrosion advisories and the unknown history during the missing years, as a classic MX-5 with gaps in documentation typically commands less than a continuously certified example.
As a 1.6-litre petrol roadster, the MX-5 of this era is relatively light on fuel and benefits from simple mechanicals, though at 108,153 miles expect modest economy by modern standards. Road tax for a 1991 petrol car is based on engine size and will be in the lower historic band, while insurance groups for early MX-5s are typically modest but can rise if declared as a modified classic. Routine maintenance such as cambelts, brake servicing and suspension bush replacement should be budgeted annually, and with the corrosion noted on arms and springs, welding or parts replacement may be needed soon; estimated annual running cost is £700-£900.
The July 2026 MOT specifically recorded corrosion on all four lower suspension arms and both rear coil springs, described as not seriously weakened, so physically inspect these components for pitting, flaking and structural integrity beyond the tester's assessment. Check that the previously failed items — Nearside Front dipped beam, Offside Front indicator, central rear registration lamp, Offside Front washer and parking brake efficiency — are now fully functional and not masked by makeshift repairs. With no MOT data from 2013 to 2026, examine the chassis rails, sills and wheel arches for rust, verify the odometer reading of 108,153 against old certificates showing 109,119 in 2012 and 105,549 in 2013, and confirm the silver bodywork and 1,590cc engine match the registration J631TNF.
This silver 1.6-litre Mazda MX-5 was first registered in October 2003 despite its 1991 model year, and shows 108,153 miles on its latest MOT from July 2026. The July 2026 test initially failed on items including a non-working dipped beam, indicator, washer, registration lamp and low parking brake efficiency, all of which were apparently resolved for a pass on 15 July. Earlier MOTs from 2011 to 2013 show clean passes with mileage fluctuating between 100,649 and 109,119, but no records exist between 2013 and 2026.
No aggregate MOT reliability data is available for the Mazda MX-5, so assessment is limited to this vehicle's individual history.
Reviewed by the IsItAGoodCar editorial team — Verified automotive analysis synthesized from official vehicle registries.
Data Sources
DVSA
Official MOT test logs & failure reasons
DVLA
Tax, registration & powertrain specs
Experian
Finance, stolen markers & total loss
AI Analysis
Historical fault & advisory patterns
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MAZDA MX-5 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 2003 model year cars.
- Front Chassis Rail CorrosionSerious
NB cars can rust badly inside the front chassis rails, sometimes while the outer structure still looks respectable from above.
- Rear Sill and Arch RustSerious
Like the NA, the NB traps moisture around the rear sill sections and arch returns, so rot often starts where it is easy to hide with cosmetic repairs.
- Blocked Hood Drains and Cabin DampModerate
When the soft-top drains block, water can back up into the cabin and accelerate rust in the sills and floor area.
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