BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
League table/ BAOTIAN/BT 50 QT-9
Model report · 2005–2025

BAOTIAN BT 50 QT-9

49cc Petrol Class 1
62.0%
first-time pass rate
27.4%
failed outright
4,324
median miles at test
1,910
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2007–2017

The BT 50 QT-9's first-time pass rate has fallen 12.0 points since 2007, 68.8% to 56.8%.

52%63%74%2007: 68.8% pass (48 tests)2008: 62.8% pass (145 tests)2009: 61.4% pass (376 tests)2010: 63.3% pass (316 tests)2011: 61.7% pass (274 tests)2012: 63.9% pass (216 tests)2013: 56.1% pass (173 tests)2014: 57.9% pass (107 tests)2015: 61.0% pass (77 tests)2016: 70.7% pass (58 tests)2017: 56.8% pass (37 tests)20072017

What fails on a BT 50 QT-9

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects vs all bikes
lighting and signalling
638 43.1 4.6×
brakes
297 20.1 2.3×
steering and suspension
277 18.7 3.4×
tyres and wheels
112 7.6 2.4×
fuel and exhaust
47 3.2 2.9×
body and structure
41 2.8 3.5×
driving controls
20 1.4 4.5×
lamps and reflectors
18 1.2 0.3×
reg plates and vin
17 1.1 1.2×
Items Not Tested
13 0.9 6.3×

Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects. "vs all bikes" is how often this model's tests record a defect in the group, as a multiple of the all-bike rate.

How rivals compare

same type, similar capacity, high test volume

On first-time pass rate the BT 50 QT-9 beats 0 of its 4 closest rivals (PEUGEOT SPEEDFIGHT, PIAGGIO ZIP, PIAGGIO NRG).

Rivals share this bike's type and sit within ±30% of its engine capacity, ≥ 5,000 tests. Card colour = better/worse first-time pass rate than the BT 50 QT-9.

Pass rate by registration year

how each model-year cohort fares · registration year from first use date

Best year to buy used: 2007 (64.0% pass). Weakest: 2004 (59.8%).

59%62%65%2004: 59.8% pass (179 tests)2005: 63.1% pass (493 tests)2006: 61.4% pass (1,108 tests)2007: 64.0% pass (86 tests)200420062007

First-time pass rate by the year each bike was first registered (cohorts with ≥ 50 tests). Older cohorts are survivors: the worst examples have already left the road, which tends to lift the earliest years.

BAOTIAN BT 50 QT-9 FAQ

answers computed from the data above · terms in the glossary

Is the BAOTIAN BT 50 QT-9 reliable?

The BAOTIAN BT 50 QT-9 is less reliable than average for its class: 62.0% of its 1,910 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #5143 of 5426 models.

What does a BT 50 QT-9 fail its MOT on most?

lighting and signalling — 43% of all defects recorded against failed BT 50 QT-9 tests.

What is the best year of BT 50 QT-9 to buy used?

By first-time pass rate, 2007-registered examples do best (64.0%) and 2004 worst (59.8%). Condition and history still trump the year.