Zontes Zt 125 G1 (2021)

246 real MOT outcomes analysed • 65.7% first-time pass rate

2021 Zontes Zt 125 G1

CarHunch analysed 246 real MOT records for the 2021 Zontes Zt 125 G1. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.

The 2021 ZONTES ZT 125-G1 has a first-time MOT pass rate of 65.7%, which sits well below the UK average of 80%, suggesting these bikes encounter more issues than typical at test time. The good news is that only 5.7% have ever suffered a dangerous defect, so safety-critical failures are uncommon.

At a median mileage of 5,730 miles for vehicles now around three years old, these bikes are running relatively low miles, yet still averaging 0.24 failures and 0.8 advisories per test—indicating that age and light use aren't protecting them from wear. Before buying, have a pre-purchase inspection focus on the systems that most commonly fail on this model, and budget for preventive maintenance to avoid becoming part of the one-in-three that don't pass on the first attempt.

Below average reliability 14.3% below UK average
65.7%
pass MOT first time
UK average: ~80%
5,730
typical mileage
2,753–9,508 middle half
5.7%
ever had a dangerous defect
recorded at any MOT
0.24
avg MOT failures per car
over 1.7 tests on record

What to check before buying a 2021 Zontes Zt 125 G1

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 Zontes Zt 125 G1

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%) 243 65.7% 0.24
Other (1%) 3 66.7% 0.33

Mileage Distribution

Most 2021 Zontes Zt 125 G1 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.

2,753
low mileage
5,730
typical
9,508
high mileage

Half of all 2021 Zontes Zt 125 G1 vehicles fall between 2,753 and 9,508 miles.

MOT History Averages

1.7
Avg MOT tests per vehicle
0.24
Avg failures per vehicle
0.8
Avg advisories per vehicle

Found a specific Zontes Zt 125 G1?

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

UK

Other model years — Zontes Zt 125 G1:

2022 2023 2024 2025