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Ajs Firefox (2018)

147 real MOT outcomes analysed • 55.2% first-time pass rate

2018 Ajs Firefox

CarHunch analysed 147 real MOT records for the 2018 Ajs Firefox. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.

Below average reliability 24.8% below UK average
55.2%
pass MOT first time
UK average: ~80%
6,471
typical mileage
3,621–9,934 middle half
10.9%
ever had a dangerous defect
recorded at any MOT
0.63
avg MOT failures per car
over 2.6 tests on record

What to check before buying a 2018 Ajs Firefox

Practical pre-purchase checks for this age and model.

  • 📋 Check the full MOT history. Look for recurring advisories — slow-building issues like corrosion or brake wear patterns show up years before they become failures. Enter the reg below for a full AI analysis.
  • 🔍 Inspect for corrosion in person. Brake pipes, sills, subframes, and chassis legs. Surface rust is normal at this age; structural rust is a serious problem that's expensive to fix and can fail an MOT.
  • 🛞 Check tyres and brakes. The most common advisory items at this age. Budget for replacement if they're near the limit — factor this into your offer price.
  • 📄 Run an HPI check. The MOT history won't show outstanding finance, insurance write-offs, or stolen status — an HPI check will.

Before you buy a Ajs Firefox

MOT history is one piece of the puzzle. These checks can reveal what CarHunch can't.

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Pass Rate by Fuel Type

Fuel type Vehicles Pass rate Avg failures
Petrol (99%) 146 55.1% 0.62
Other (1%) 1 60% 2

Mileage Distribution

Most 2018 Ajs Firefox vehicles sit in the blue band. If the car you're looking at is outside it, it's either unusually low or high mileage for its age.

3,621
low mileage
6,471
typical
9,934
high mileage

Half of all 2018 Ajs Firefox vehicles fall between 3,621 and 9,934 miles.

2018 Ajs Firefox — Still on the Road

Numbers are declining — 30 vehicles still getting MOTs in 2025 (43% of peak).

70 30 2021 2025

Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2021–2025.

MOT History Averages

2.6
Avg MOT tests per vehicle
0.63
Avg failures per vehicle
1.7
Avg advisories per vehicle

Most Common MOT Issues — 2018 Ajs Firefox

Based on actual MOT test records for this model. Percentage shows how often each item appears across all vehicles in this cohort.

  • 18.6%
    COVID-19 6 MONTH EXTENSION
  • 18.2%
    Nearside Front Shock absorber has a light misting of oil
  • 16.4%
    Offside Front Shock absorber has a light misting of oil
  • 14.5%
    Rear Tyre worn close to the legal limit
  • 14.1%
    Headlamp not working on dipped beam
  • 13.2%
    Front Shock absorber has a light misting of oil
  • 12.3%
    Roller brake test The less effective brake control does not achieve an efficiency of 25%
  • 11.4%
    Steering headbearing has slight free play

Data covers a 3-year window centred on 2018. Counts include advisories and failures.

Found a specific Ajs Firefox?

Enter the reg to see its individual MOT history, AI Hunches, and how it compares to this cohort.

UK

Other model years — Ajs Firefox:

2015 2016 2017 2019 2020