BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
League table/ MZ/TS125
Model report · 2005–2025

MZ TS125

123cc Petrol Class 1
#2866 of 5426 overall #12 of 20 MZs #42 of 734 commuter bikes
83.4%
first-time pass rate
8.5%
failed outright
13,302
median miles at test
968
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2006–2021

The TS125's first-time pass rate has risen 2.6 points since 2006, 81.8% to 84.4%.

68%80%91%2006: 81.8% pass (77 tests)2007: 84.9% pass (53 tests)2008: 86.9% pass (61 tests)2009: 75.0% pass (64 tests)2010: 72.1% pass (61 tests)2011: 80.3% pass (71 tests)2012: 86.2% pass (65 tests)2013: 79.7% pass (64 tests)2014: 84.5% pass (71 tests)2015: 84.4% pass (64 tests)2016: 87.5% pass (48 tests)2017: 85.7% pass (49 tests)2018: 80.0% pass (40 tests)2021: 84.4% pass (32 tests)20062021

Pass rate by mileage

how the TS125's first-time pass rate falls with the odometer · class average 73.4%

A low-mileage TS125 passes first time 81.4% of the time; by 30k that's 83.9%.

80%84%89%0k: 81.4% pass (365 tests)10k: 83.0% pass (323 tests)20k: 87.4% pass (174 tests)30k: 83.9% pass (56 tests)0k20k30k

First-time pass rate by odometer reading at test, 10,000-mile bands for this model. Mileage is the strongest reliability signal. See the full curve.

What fails on a TS125

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects vs all bikes
lighting and signalling
91 43.1 1.2×
steering and suspension
31 14.7 0.8×
tyres and wheels
24 11.4 1.2×
brakes
22 10.4 0.4×
lamps and reflectors
16 7.6 0.5×
body and structure
7 3.3 1.1×
reg plates and vin
7 3.3 0.9×
fuel and exhaust
5 2.4 0.7×
suspension
4 1.9 0.4×
structure and attachments
4 1.9 0.6×

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 TS125 beats 4 of its 4 closest rivals (YAMAHA YBR 125, HONDA CG125, HONDA CBF125).

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 TS125.

Pass rate by registration year

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

Best year to buy used: 1983 (86.3% pass). Weakest: 1979 (76.5%).

75%81%88%1979: 76.5% pass (51 tests)1983: 86.3% pass (102 tests)1984: 84.3% pass (108 tests)1985: 83.6% pass (177 tests)1986: 83.8% pass (234 tests)1987: 83.7% pass (92 tests)197919851987

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.

MZ TS125 FAQ

answers computed from the data above · terms in the glossary

Is the MZ TS125 reliable?

The MZ TS125 is more reliable than average for its class: 83.4% of its 968 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #2866 of 5426 models.

What does a TS125 fail its MOT on most?

lighting and signalling — 43% of all defects recorded against failed TS125 tests.

What is the best year of TS125 to buy used?

By first-time pass rate, 1983-registered examples do best (86.3%) and 1979 worst (76.5%). Condition and history still trump the year.

How many miles will a TS125 last?

The median TS125 shows 13,302 miles at test, and examples around 30k miles still pass 83.9% of the time — mileage alone rarely kills one.