Mutt Mongrel 125 (2020)
2020 Mutt Mongrel 125
CarHunch analysed 134 real MOT records for the 2020 Mutt Mongrel 125. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.
The 2020 MUTT MONGREL 125 has a first-time pass rate of 64.6%, which is 15 points below the UK average of 80%—a meaningful gap that suggests these vehicles come to their first MOT with more defects than typical. The dangerous defect rate of 9% is moderate and shouldn't be a primary concern.
At a median mileage of 4,505 miles, these vehicles are lightly used for their age, yet they're still averaging 0.48 failures and 1.3 advisories per test, indicating some reliability issues even at low mileage. Before buying, get a pre-purchase inspection focused on the common failure points—the advisories will point you toward what's wearing prematurely on this model.
What to check before buying a 2020 Mutt Mongrel 125
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 Mutt Mongrel 125
MOT history is one piece of the puzzle. These checks can reveal what CarHunch can't.
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Mileage Distribution
Most 2020 Mutt Mongrel 125 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.
Half of all 2020 Mutt Mongrel 125 vehicles fall between 1,999 and 7,402 miles.
2020 Mutt Mongrel 125 — Still on the Road
Strong survival — 66 vehicles still getting MOTs in 2025, 88% of the peak.
Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2023–2025.
MOT History Averages
Found a specific Mutt Mongrel 125?
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