BIKERELIABILITY Reg check
League table/ YAMAHA/CS 50 JOG RR
Model report · 2005–2025

Data as of: DVSA MOT results to 2025

YAMAHA CS 50 JOG RR

49cc Petrol Class 1
#4840 of 5428 overall #379 of 409 YAMAHAs #267 of 456 moped bikes
68.3%
first-time pass rate
22.3%
failed outright
3,516
median miles at test
3,493
MOT tests, 2005–2025
-8.6pp
vs expected · age & mileage

The pass rate is the MOT first-time pass: a roadworthiness check of the items an MOT covers (brakes, lights, tyres, steering, structure, emissions), not a full mechanical inspection of engine or gearbox internals. It is a reliability signal, not a complete measure of mechanical reliability. What this measures.

“vs expected” adjusts for age, mileage and test class, so a cherished classic and a hard-used commuter are compared fairly. How this works.

Pass rate over time

first-time pass rate by test year · 2008–2025

The CS 50 JOG RR's first-time pass rate has fallen 10.1 points since 2008, 69.4% to 59.3%.

55%68%80%2008: 69.4% pass (36 tests)2009: 76.1% pass (67 tests)2010: 71.8% pass (124 tests)2011: 67.6% pass (219 tests)2012: 70.7% pass (287 tests)2013: 65.9% pass (337 tests)2014: 70.2% pass (389 tests)2015: 68.4% pass (405 tests)2016: 68.6% pass (373 tests)2017: 65.8% pass (298 tests)2018: 70.7% pass (167 tests)2019: 69.4% pass (160 tests)2020: 65.3% pass (118 tests)2021: 64.2% pass (148 tests)2022: 66.1% pass (124 tests)2023: 73.3% pass (101 tests)2024: 64.8% pass (71 tests)2025: 59.3% pass (59 tests)20082025

What fails on a CS 50 JOG RR

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects vs all bikes
lighting and signalling
621 30.7 2.5×
brakes
449 22.2 2.2×
lamps and reflectors
282 13.9 2.5×
tyres and wheels
178 8.8 1.9×
steering and suspension
157 7.8 1.3×
fuel and exhaust
97 4.8 3.4×
tyres
74 3.7 2.4×
structure and attachments
65 3.2 2.0×
body and structure
54 2.7 2.3×
steering
45 2.2 2.8×

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 CS 50 JOG RR beats 2 of its 4 closest rivals (PEUGEOT SPEEDFIGHT, PIAGGIO ZIP, PIAGGIO NRG).

PEUGEOT SPEEDFIGHT 65.2% pass · 83.7k tests Compare head-to-head →
PIAGGIO ZIP 71.3% pass · 79.0k tests Compare head-to-head →
PIAGGIO NRG 65.5% pass · 40.5k tests Compare head-to-head →
PEUGEOT VIVACITY 70.4% pass · 29.7k tests Compare head-to-head →

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 CS 50 JOG RR.

Compare with any bike

rival not listed above? pick any model to see it head-to-head with the CS 50 Jog RR

More YAMAHA models

other YAMAHA bikes ranked by MOT pass rate
YAMAHA YZF-R1 84.1% pass · 232k tests
YAMAHA YZF-R6 79.0% pass · 155k tests
YAMAHA FZS600 82.6% pass · 137k tests
YAMAHA YBR 125 71.0% pass · 125k tests
YAMAHA XJR1300 87.4% pass · 95.1k tests
YAMAHA FZ6 85.2% pass · 67.1k tests

See all YAMAHA models →

Pass rate by registration year

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

Highest pass rate: 2010 (71.8%). Lowest: 2013 (65.4%). Every CS 50 Jog RR year compared →

64%69%73%2005: 71.6% pass (201 tests)2006: 66.8% pass (199 tests)2007: 68.5% pass (492 tests)2008: 69.3% pass (612 tests)2009: 66.7% pass (553 tests)2010: 71.8% pass (400 tests)2011: 66.0% pass (459 tests)2012: 69.8% pass (311 tests)2013: 65.4% pass (208 tests)200520092013

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.

YAMAHA CS 50 JOG RR FAQ

answers computed from the data above · terms in the glossary

Is the YAMAHA CS 50 JOG RR reliable?

The YAMAHA CS 50 JOG RR is less reliable than average for its class: 68.3% of its 3,493 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #4840 of 5428 models.

What does a CS 50 JOG RR fail its MOT on most?

lighting and signalling: 31% of all defects recorded against failed CS 50 JOG RR tests.

What is the best year of CS 50 JOG RR to buy used?

By first-time pass rate, 2010-registered examples do best (71.8%) and 2013 worst (65.4%). Condition and history still trump the year.

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