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Baotian Bt 125 T-21 Reliability, MOT Pass Rate & Common Faults

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Is the Baotian Bt 125 T-21 reliable? We analysed 1,213 real MOT tests across 259 vehicles to find out.

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Data last updated: · Based on 1,213 real MOT tests
MOT Pass Rate
74.4%
Typical Mileage
6,557mi
Annual Mileage
756mi/yr
Est. Lifespan
15yrs

The Baotian Bt 125 T-21 is about average for reliability based on real UK MOT data. Common problems include direction indicator incorrect colour, tyre tread depth is below minimum requirements of 1.0mm and shock absorber has inadequate damping effect.. Here's everything you need to know before buying a used Baotian Bt 125 T-21.

Baotian Bt 125 T-21 Number Plates

Number plates registered to a Baotian Bt 125 T-21. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.

Baotian Bt 125 T-21 MOT Pass Rate by Year

How likely is a Baotian Bt 125 T-21 to pass its MOT? Here's the pass rate for each registration year, newest first.

75%
2013
75.2%
2012
71.8%
2011

Baotian Bt 125 T-21 Problems — What Goes Wrong?

The most common reasons a Baotian Bt 125 T-21 fails its MOT, ranked by how often they occur. Check for these problems before you buy.

Direction indicator incorrect colour 35
Tyre tread depth is below minimum requirements of 1.0mm 34
shock absorber has inadequate damping effect. 17
wheel bearings have excessive free play 16
wheel bearings are excessively rough 14
Horn not working 14
Headlamp aim too low 13
Roller brake test The less effective brake control does not achieve an efficiency of 25%. 12

Baotian Bt 125 T-21 Common Faults & Problems

These are the most common serious faults found on Baotian Bt 125 T-21 models during MOT testing — flagged as dangerous or major failures that need immediate attention.

Tyre tread depth is below minimum requirements of 1.0mm 21

Baotian Bt 125 T-21 Mileage — What's Normal?

How many miles does a typical Baotian Bt 125 T-21 owner drive per year? Use this to check if a car you're looking at has suspiciously low or high mileage.

Low usage
258 mi/yr
Typical
756 mi/yr
Average
1,359 mi/yr
Heavy usage
1,760 mi/yr

Baotian Bt 125 T-21 MOT Data by Registration Year

Full breakdown of pass rate and mileage for each year. Use this to compare the Baotian Bt 125 T-21 year you're looking at.

Year Tests Pass Rate Low Mi. Typical Mi. High Mi.
2013 296 75.0% 4,411 7,922 11,198
2012 592 75.2% 3,088 6,143 10,262
2011 309 71.8% 3,325 6,649 11,345

How Long Does a Baotian Bt 125 T-21 Last?

Based on 259 Baotian Bt 125 T-21 vehicles on UK roads.

Average
6.4 years
Median
5.0 years
Estimated max lifespan
15 years

Baotian Bt 125 T-21 Mileage Distribution

Total mileage recorded across all Baotian Bt 125 T-21 MOT tests. If the car you're looking at is above the 75th percentile, it's done more miles than most.

Median
6,557 mi
75th Percentile
10,699 mi
95th Percentile
18,183 mi
Max Recorded
42,591 mi

Best Year to Buy a Used Baotian Bt 125 T-21

Based on MOT pass rates across all registration years with sufficient test data.

Best year
2012

75.2% MOT pass rate from 592 tests

Year to avoid
2011

71.8% MOT pass rate from 309 tests

The best year to buy a used Baotian Bt 125 T-21 is 2012, which has the highest MOT pass rate at 75.2% across 592 tests. The 2011 model year has the lowest pass rate at 71.8% — if you're looking at one from that year, budget for potential repairs and get a thorough pre-purchase inspection.

How Does the Baotian Bt 125 T-21 Compare?

MOT pass rates compared to similar models. Click any model for the full breakdown.

Model Pass Rate Tests Typical Mileage Lifespan
Baotian Bt 125 T-21 THIS CAR 74.4% 1,213 6,557 mi 15 yrs
Baotian Bt 49 QT-9D 73.9% 3,140 5,996 mi 18 yrs
Baotian Bt 49 QT-9 73.6% 2,662 4,826 mi 20 yrs
Baotian Bt 50 QT-9 71.9% 2,344 4,393 mi 22 yrs
Yamaha YZ250 85.3% 457 611 mi 22 yrs

Compared to the Baotian Bt 49 QT-9D (73.9% pass rate) and the Baotian Bt 49 QT-9 (73.6% pass rate), the Baotian Bt 125 T-21 outperforms both on MOT reliability.

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Should you buy a used Baotian Bt 125 T-21?

The Baotian Bt 125 T-21 has an overall MOT pass rate of 74.4% across 1,213 real MOT tests — roughly in line with the UK average.

The most common problems on the Baotian Bt 125 T-21 are direction indicator incorrect colour (35 recorded failures), tyre tread depth is below minimum requirements of 1.0mm (34), and shock absorber has inadequate damping effect. (17). These are the faults most likely to cause an MOT failure on this model, so check for them carefully on any test drive or pre-purchase inspection. Many are wear-and-tear items that can be budgeted for, but a car that's already failing on multiple fronts may signal neglected maintenance.

On the safety side, the most frequently flagged dangerous fault is tyre tread depth is below minimum requirements of 1.0mm. Dangerous faults cause an immediate MOT failure and mean the vehicle is not roadworthy until repaired. If you're viewing a Baotian Bt 125 T-21 with an expired or recently passed MOT, ask the seller whether any dangerous faults were found and fixed during the last test.

A typical Baotian Bt 125 T-21 owner drives around 756 miles per year. If the car you're looking at is significantly above this, expect more wear on suspension, brakes and tyres. If it's well below, the vehicle may have been sitting unused — check for perished rubber, corroded discs and stale fluids.

In terms of longevity, most Baotian Bt 125 T-21 models stay on UK roads for around 15 years — a strong showing that suggests solid build quality and readily available parts. If you're buying one that's already approaching that window, the data suggests it has plenty of life left provided it's been maintained.

Before committing to a purchase, we recommend running a full vehicle history check on the specific car. This will reveal any outstanding finance, stolen markers, write-off history and mileage discrepancies that the seller may not disclose — and that the MOT data alone can't tell you.

Baotian Bt 125 T-21 — Frequently Asked Questions

Is the Baotian Bt 125 T-21 reliable?
Based on 1,213 MOT tests, the Baotian Bt 125 T-21 has a 74.4% pass rate — about average for UK cars.
What are the common problems on a Baotian Bt 125 T-21?
The most common MOT failures are direction indicator incorrect colour, tyre tread depth is below minimum requirements of 1.0mm, and shock absorber has inadequate damping effect.. Check these on any test drive.
How many miles does a Baotian Bt 125 T-21 do per year?
The typical Baotian Bt 125 T-21 does around 756 miles per year. Anything significantly above or below this is worth investigating.
How long does a Baotian Bt 125 T-21 last?
Most Baotian Bt 125 T-21 models stay on UK roads for around 15 years based on our analysis of 259 vehicles.
Should I get a vehicle check before buying a Baotian Bt 125 T-21?
Yes. An MOT pass rate tells you about the model in general, but a vehicle history check reveals the specific car's finance, stolen, write-off and mileage history — things the seller may not disclose.
What is the best year to buy a Baotian Bt 125 T-21?
Based on MOT pass rates, the best year to buy a used Baotian Bt 125 T-21 is 2012 with a 75.2% pass rate across 592 tests.