2018 SEAT Leon 1.4L Petrol · KJ18 KNG
2018 SEAT Leon (1.4L, petrol). First registered 01 Aug 2018. Recorded mileage 66,458 miles. MOT expired on 07 Aug 2026.
- Make & Model
- SEAT LEON
- Year / Origin
- 2018 · Borehamwood (Luton)
- Safety Recall
- Unknown
- MOT Status
- Expired on 07 Aug 2026
- Road Tax
- —
- Recorded Mileage
- 66,458 mi
- ULEZ Compliance
- ULEZ Compliant (Euro 4+)
- Fuel & Engine
- Petrol · 1.4L
- 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.
KJ18 KNG Key Findings
- 5 MOT tests recorded
- Latest MOT passed on 08/08/2025
- 66,458 miles recorded at latest MOT
- 2 historical MOT failures
- No defects recorded at the latest MOT
Derived directly from the recorded DVSA and DVLA data shown on this page.
KJ18 KNG MOT History
Interpretation generated from the recorded test data above — not an official DVSA statement and not a substitute for an independent inspection.
5 MOT tests are recorded for this 2018 Seat Leon (KJ18 KNG) between July 2023 and August 2025.
The record contains 3 passes and 2 failures.
The most recent test on 08 August 2025 was a pass, although the earlier record includes 2 failures that buyers may want to investigate.
KJ18 KNG Mileage History
- 12/07/202344,840 mi
- 31/07/202454,070 mi+9,230 mi
- 05/08/202454,109 mi+39 mi
- 07/08/202566,439 mi+12,330 mi
- 08/08/202566,458 mi+19 mi
Average of roughly 10,420 miles per year across 5 recorded odometer readings.
Technical Specifications
Core Specifications
Identification & Status
Dimensions & Weights
Diagnostic & Valuation Intelligence
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Known faults for SEAT SEAT Leon Mk3 (5F)
Our database tracks 4 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.
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Digital Service History
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SEAT LEON 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 2018 model year cars.
- LED Headlight FailureModerate
Individual LEDs or the control board fail. The units are sealed and must be replaced entirely.
- Water Pump / Thermostat LeakModerate
Plastic housing cracks or the seal fails, leading to coolant loss.
- Silica Bag Failure (Coolant System)Serious
A silica bag in the coolant expansion tank can split, clogging the heater matrix and radiator.
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