LONGJIA LJ 50 QT-K

49cc Petrol Class 1

#5293 of 5426 overall #4 of 4 LONGJIAs #399 of 455 moped bikes

57.3%

first-time pass rate

31.8%

failed outright

5,822

median miles at test

1,184

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2011–2019

The LJ 50 QT-K's first-time pass rate has risen 6.8 points since 2011, 57.9% to 64.7%.

What fails on a LJ 50 QT-K

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
lighting and signalling	450	35.6	4.6×
steering and suspension	304	24.1	5.2×
brakes	232	18.4	3.1×
tyres and wheels	78	6.2	2.4×
lamps and reflectors	63	5	1.6×
fuel and exhaust	59	4.7	5.5×
body and structure	39	3.1	4.8×
suspension	14	1.1	1.3×
reg plates and vin	14	1.1	1.5×
structure and attachments	10	0.8	1.1×

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 LJ 50 QT-K beats 0 of its 4 closest rivals (PEUGEOT SPEEDFIGHT, PIAGGIO ZIP, PIAGGIO NRG).

PEUGEOT SPEEDFIGHT 65.2% pass · 83.7k tests PIAGGIO ZIP 71.3% pass · 79.0k tests PIAGGIO NRG 65.5% pass · 40.5k tests PEUGEOT VIVACITY 70.4% pass · 29.7k tests

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 LJ 50 QT-K.

Pass rate by registration year

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

Best year to buy used: 2012 (74.5% pass). Weakest: 2010 (51.2%).

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.

LONGJIA LJ 50 QT-K FAQ

answers computed from the data above · terms in the glossary

Is the LONGJIA LJ 50 QT-K reliable?

The LONGJIA LJ 50 QT-K is less reliable than average for its class: 57.3% of its 1,184 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #5293 of 5426 models.

What does a LJ 50 QT-K fail its MOT on most?

lighting and signalling — 36% of all defects recorded against failed LJ 50 QT-K tests.

What is the best year of LJ 50 QT-K to buy used?

By first-time pass rate, 2012-registered examples do best (74.5%) and 2010 worst (51.2%). Condition and history still trump the year.