Caterham Unknown (2021)

202 real MOT outcomes analysed • 65.8% first-time pass rate

2021 Caterham Unknown

CarHunch analysed 202 real MOT records for the 2021 Caterham Unknown. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.

Below average reliability 14.2% below UK average
65.8%
pass MOT first time
UK average: ~80%
3,548
typical mileage
2,137–5,951 middle half
3%
ever had a dangerous defect
recorded at any MOT
0.17
avg MOT failures per car
over 1.6 tests on record

What to check before buying a 2021 Caterham Unknown

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 Caterham Unknown

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 (100%) 201 65.6% 0.17
Other (0%) 1 100% 0

Mileage Distribution

Most 2021 Caterham Unknown 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.

2,137
low mileage
3,548
typical
5,951
high mileage

Half of all 2021 Caterham Unknown vehicles fall between 2,137 and 5,951 miles.

MOT History Averages

1.6
Avg MOT tests per vehicle
0.17
Avg failures per vehicle
0.3
Avg advisories per vehicle

Most Common MOT Issues — 2021 Caterham Unknown

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

  • 12.3%
    Exhaust Lambda reading after 2nd fast idle outside specified limits
  • 11.6%
    Nearside Front Wheel bearing has slight play
  • 11%
    Nearside Rear Tyre worn close to legal limit/worn on edge
  • 9%
    Exhaust carbon monoxide content after 2nd fast idle exceeds manufacturer's specified limits
  • 8.4%
    Offside Rear Tyre worn close to legal limit/worn on edge
  • 8.4%
    Exhaust carbon monoxide content after 2nd fast idle exceeds default limits
  • 7.7%
    Offside Front Wheel bearing has slight play
  • 7.1%
    Exhaust carbon monoxide content at idle exceeds manufacturer's specified limits

Data covers a 3-year window centred on 2021. Counts include advisories and failures.

Found a specific Caterham Unknown?

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

UK

Other model years — Caterham Unknown:

2013 2016 2017 2018 2019 2020 2022 2023 2024