Zontes ZT 125-G1 MOT pass rate and common failures

Zontes ZT 125-G1 motorcycles pass the MOT 78.48% of the time, measured across 446 tests in the DVSA record. A further 4.04% passed only after a defect was put right at the test station.

Worse than average: 8.4 points below the 86.87% figure for all motorcycles tested.

Pass rate 78.48% 350 of 446

Fixed at the station 4.04% passed after an on-the-spot repair

Average mileage at test 7,216 miles

Average age at test 3.41 years old

Engine 125cc MOT class 1 and 2

For sale now 0 Zontes ZT 125-G1 adverts

What to check before the MOT

Built from this model's own failure record, not general advice.

Start with has a serious fluid leak - it accounts for 29.5% of failed tests on this model.
Then check contaminated and excessively loose, the next two most common reasons.
The most common advisory is excessively loose (6.3% of all tests) - not a failure, but money you will spend sooner or later.
Average recorded mileage at test is 7,216 miles, which is the number to compare any advert against.

Pass rate by age

A single pass rate hides the most useful thing in this data: how the same model behaves at three years old and at fifteen.

Age at test	Pass rate		Tests
3-5 years	78.48%		446

Why the Zontes ZT 125-G1 fails

Share of failed tests on this model where the item was recorded. One test can fail on several items, so the column does not add up to 100%.

#	Item	Of failures	Tests
1	Has a serious fluid leak	29.5%	23
2	Contaminated	19.2%	15
3	Excessively loose	12.8%	10
4	The less effective brake control does not achieve an efficiency of 25%	12.8%	10
5	Too low	11.5%	9
6	Missing	10.3%	8
7	Worn to excess	10.3%	8
8	Indicates excessive fluctuation of brake effort	9%	7
9	So loose it is likely to fail	9%	7
10	Excessively binding	7.7%	6

Most common advisories

Not a failure and not a legal requirement to fix - but an advisory that repeats year after year is money the next owner spends.

#	Item	Of all tests	Tests
1	Excessively loose	6.3%	28
2	Has a serious fluid leak	6.1%	27
3	Tread depth is below minimum requirements of 1.0mm	5.2%	23
4	Noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition	4%	18
5	Indicates excessive fluctuation of brake effort	3.8%	17
6	Worn to excess	3.6%	16
7	Excessively binding	2.2%	10
8	Less than 1.0 mm thick	1.8%	8
9	Tread not clearly visible	1.6%	7
10	Sprocket excessively loose	1.3%	6

Zontes ZT 125-G1 for sale

No Zontes ZT 125-G1 in stock at the moment - 3 other Zontes bikes are advertised.

Used Zontes ZT 125-G1 Used Zontes All Zontes Zontes MOT statistics

Similar bikes compared

Models of comparable capacity, so the comparison means something.

Model	Tests	Pass rate	Avg mileage
Yamaha GPD125-A NMAX 125 · 125cc	8,762	80.8%	45,039
Piaggio VESPA 79-210cc · 79-210cc	8,363	85.42%	11,710
Honda WW · 125cc	7,252	80.32%	40,134
Honda WW 125 A-M · 125cc	5,011	84.06%	29,846
Honda GLR · 125cc	4,737	79.99%	14,642
Honda CBF 100-125cc · 100-125cc	3,204	77%	15,203

Source: DVSA MOT testing data, 2025 · updated Aug 2026 · licence and method

Zontes ZT 125-G1 MOT questions

What is the MOT pass rate for the Zontes ZT 125-G1?+

78.48% of Zontes ZT 125-G1 MOT tests end in a pass, based on 446 tests in the DVSA dataset.

What is the most common MOT failure on a Zontes ZT 125-G1?+

Has a serious fluid leak, which appears in 29.5% of failed tests on this model.

Where does this data come from?+

From the DVSA anonymised MOT testing dataset, which records every MOT carried out in England, Scotland and Wales. It is published under the Open Government Licence and covers 2025.

Does a high pass rate mean the bike is reliable?+

Not by itself. The MOT checks safety items - brakes, tyres, lights, structure - and says nothing about engines, gearboxes or electrics. Read it as a maintenance signal, not a reliability score.