BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
League table/ SYM/XS 125 K
Model report · 2005–2025
62.7%
first-time pass rate
24.7%
failed outright
9,636
median miles at test
1,728
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2011–2021

The XS 125 K's first-time pass rate has fallen 6.8 points since 2011, 64.3% to 57.5%.

52%68%83%2011: 64.3% pass (143 tests)2012: 64.6% pass (192 tests)2013: 61.9% pass (257 tests)2014: 57.4% pass (284 tests)2015: 58.2% pass (237 tests)2016: 62.8% pass (183 tests)2017: 76.4% pass (123 tests)2018: 62.0% pass (71 tests)2019: 65.5% pass (58 tests)2020: 77.8% pass (36 tests)2021: 57.5% pass (40 tests)20112021

Pass rate by mileage

how the XS 125 K's first-time pass rate falls with the odometer · class average 73.4%

A low-mileage XS 125 K passes first time 67.2% of the time; by 30k that's 50.0%.

47%59%71%0k: 67.2% pass (891 tests)10k: 59.2% pass (596 tests)20k: 57.6% pass (177 tests)30k: 50.0% pass (42 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 XS 125 K

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects vs all bikes
lighting and signalling
360 27.7 3.2×
steering and suspension
259 19.9 3.4×
brakes
214 16.4 2.1×
drive system
172 13.2 9.9×
body and structure
69 5.3 6.1×
lamps and reflectors
67 5.1 1.4×
structure and attachments
62 4.8 3.3×
tyres and wheels
41 3.2 1.1×
fuel and exhaust
32 2.5 2.1×
suspension
25 1.9 1.8×

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 XS 125 K beats 0 of its 4 closest rivals (PIAGGIO VESPA, HONDA PCX 125, HONDA Vision 110).

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 XS 125 K.

Pass rate by registration year

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

Best year to buy used: 2011 (66.9% pass). Weakest: 2009 (59.5%).

58%63%68%2007: 62.6% pass (139 tests)2008: 62.1% pass (607 tests)2009: 59.5% pass (331 tests)2010: 63.4% pass (385 tests)2011: 66.9% pass (239 tests)200720092011

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.

SYM XS 125 K FAQ

answers computed from the data above · terms in the glossary

Is the SYM XS 125 K reliable?

The SYM XS 125 K is less reliable than average for its class: 62.7% of its 1,728 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #5121 of 5426 models.

What does a XS 125 K fail its MOT on most?

lighting and signalling — 28% of all defects recorded against failed XS 125 K tests.

What is the best year of XS 125 K to buy used?

By first-time pass rate, 2011-registered examples do best (66.9%) and 2009 worst (59.5%). Condition and history still trump the year.

How many miles will a XS 125 K last?

The median XS 125 K shows 9,636 miles at test, and examples around 30k miles still pass 50.0% of the time — mileage alone rarely kills one.