Should I check the MOT history before buying a 2021 Mutt Mongrel 125?

Yes. Look for recurring advisories — slow-building issues like corrosion or brake wear patterns show up years before they become failures. A full MOT history analysis will highlight patterns that a single test result won't reveal.

What corrosion should I look for when inspecting a 2021 Mutt Mongrel 125?

Check brake pipes, sills, subframes, and chassis legs. Surface rust is normal at this age; structural rust is a serious problem that is expensive to fix and can fail an MOT.

How are tyres and brakes typically on a 2021 Mutt Mongrel 125?

Tyres and brakes are the most common advisory items on vehicles of this age. Budget for replacement if they are near the limit, and factor this into your offer price.

Is the 2021 Mutt Mongrel 125 reliable?

Based on MOT data from 227 vehicles, the 2021 Mutt Mongrel 125 has a first-time MOT pass rate of 83.1%, indicating generally reliable for its class. Always check the full MOT history of any specific vehicle before buying.

Do I need an HPI check when buying a 2021 Mutt Mongrel 125?

Yes. The MOT history will not show outstanding finance, insurance write-offs, or stolen status. An HPI check covers these areas and should be part of any used car purchase.

CarHunch

Get Started

Mutt Mongrel 125 (2021)

227 real MOT outcomes analysed • 83.1% first-time pass rate

2021 Mutt Mongrel 125

CarHunch analysed 227 real MOT records for the 2021 Mutt Mongrel 125. Real test outcomes — pass rates, defect profiles, mileage data — from verified DVLA records. Updated as new MOTs are recorded.
Which year to buy? →

On this page

AI Analysis Reliability Overview Check a Specific Reg Buyer's Checklist Mileage Distribution MOT Averages Colour Breakdown Compare Models

The 2021 MUTT MONGREL 125 passes its MOT only 59.7% of the time on first attempt, well below the UK average of 80%, which signals notably weaker reliability than typical cars. With 6.6% of vehicles having recorded a dangerous defect, this model sits within normal range, but the below-average pass rate remains the primary concern for a prospective buyer.

At an average mileage of 3,967 miles for a three-year-old vehicle, these machines are lightly used, yet still struggle with compliance—suggesting the issues aren't simply wear-related. The average 0.33 failures and 0.8 advisories per vehicle indicate common but generally minor problems; before purchase, inspect service history closely and budget for remedial work before your first MOT attempt.

We have limited data for the 2021 Mutt Mongrel 125 — treat the figures below as indicative rather than definitive.

⚠️ Around 1 in 20 of these vehicles have had a dangerous MOT failure at some point — usually tyres or brakes, and often a one-off issue rather than a persistent problem. The group stats won't tell you which one you're looking at.

First-time pass

83.1%

UK average ~80%

Around average

Dangerous (ever)

6.6%

At least once in MOT history

Check this vehicle

Avg failures / car

0.33

Over 1.7 tests on record

Low

Typical mileage

Middle half: 1k–5k

For context

These stats describe 227 vehicles as a group. The specific vehicle you're looking at could be the one good example or the one outlier. Run its registration to find out.

Average reliability — agree?

See this vehicle's full MOT history & AI hunches

Spot recurring advisories, hidden issues, and how it compares to 227 Mutt Mongrel 125 cars.

Before you buy a 2021 Mutt Mongrel 125

Based on MOT data from 227 vehicles — here's what to check.

📋 Check the full MOT history. 6.6% of these vehicles have had a dangerous defect recorded - recurring advisories often signal problems years before they become failures.
Search the reg on CarHunch for the full MOT history, reliability stats and a free AI-powered analysis of that exact vehicle.
🔍 Brake pipes, sills and subframes are the key areas on a vehicle this age — structural rust is hard to spot without getting underneath. A mechanic will check all of this before you commit, and give you a concrete basis to negotiate on price. Inspection →
📄 Outstanding finance, insurance write-offs and clocking won't appear in the MOT records — a dedicated history check covers all of this. Our link gets you 20% off automatically. History Get 20% off via CarHunch

Colour Breakdown

Based on 2,026 Mutt Mongrel 125 vehicles registered in the UK — across all years. From DVLA registration records.

Black 79.3%

1,607

Grey 10.8%

218

Green 3.9%

Silver 2.4%

Orange 1.2%

Blue 1.1%

White 0.6%

Bronze 0.6%

Mileage Distribution

Most 2021 Mutt Mongrel 125 vehicles sit in the blue band. If the vehicle you're looking at is outside it, it's either unusually low or high mileage for its age.

2,907

typical

1,455

low mileage

5,474

high mileage

Half of all 2021 Mutt Mongrel 125 vehicles fall between 1,455 and 5,474 miles.

Is the mileage you're seeing normal?

✓ Under 1,455 miles — lower than most. Could be great, or could be a vehicle that rarely moved. Check test frequency and mileage progression in the MOT history.

✓ 1,455–5,474 miles — normal for age. This is where most 2021 Mutt Mongrel 125s sit.

⚠ Over 7,389 miles — higher than typical. Not necessarily a problem, but check service history and look out for advisory build-up on tyres and brakes.

MOT History Averages

1.7

Avg MOT tests per vehicle

0.33

Avg failures per vehicle

0.8

Avg advisories per vehicle

Other model years — Mutt Mongrel 125: All Mongrel 125 years → Which year to buy? →

2016 2017 2018 2019 2020 2022

Or browse all models: Mutt →

Compare with another model

See how the 2021 Mutt Mongrel 125 stacks up against a rival.

Average reliability — agree?