BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
Model report · 2005–2025

KAWASAKI GPZ

500cc Petrol Class 2
74.1%
first-time pass rate
18.2%
failed outright
27,727
median miles at test
2,509
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2005–2024

The GPZ's first-time pass rate has risen 10.6 points since 2005, 68.2% to 78.8%.

65%75%84%2005: 68.2% pass (44 tests)2006: 72.3% pass (264 tests)2007: 74.4% pass (207 tests)2008: 70.9% pass (196 tests)2009: 70.1% pass (187 tests)2010: 73.7% pass (175 tests)2011: 70.3% pass (175 tests)2012: 73.5% pass (166 tests)2013: 71.8% pass (174 tests)2014: 73.2% pass (168 tests)2015: 81.0% pass (147 tests)2016: 77.6% pass (116 tests)2017: 79.2% pass (96 tests)2018: 80.6% pass (67 tests)2019: 80.0% pass (65 tests)2020: 69.8% pass (43 tests)2021: 75.0% pass (68 tests)2022: 76.0% pass (50 tests)2023: 77.1% pass (48 tests)2024: 78.8% pass (33 tests)20052024

Pass rate by mileage

how the GPZ's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage GPZ passes first time 82.0% of the time; by 50k that's 71.2%.

58%72%86%0k: 82.0% pass (278 tests)10k: 80.4% pass (501 tests)20k: 75.6% pass (624 tests)30k: 70.3% pass (543 tests)40k: 62.3% pass (305 tests)50k: 71.2% pass (163 tests)0k30k50k

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 GPZ

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects vs all bikes
brakes
269 25 1.8×
steering and suspension
267 24.8 2.5×
lighting and signalling
231 21.5 1.6×
tyres and wheels
84 7.8 1.4×
drive system
76 7.1 3.4×
fuel and exhaust
49 4.6 2.4×
lamps and reflectors
40 3.7 0.7×
suspension
23 2.1 0.9×
structure and attachments
18 1.7 0.8×
driving controls
18 1.7 3.1×

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 GPZ beats 0 of its 4 closest rivals (KAWASAKI ZX-6R, SUZUKI GSF600, YAMAHA FZS600).

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 GPZ.

Pass rate by registration year

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

Best year to buy used: 2002 (88.2% pass). Weakest: 1989 (59.8%).

54%74%94%1984: 82.6% pass (69 tests)1985: 71.3% pass (129 tests)1986: 68.6% pass (86 tests)1989: 59.8% pass (122 tests)1990: 79.6% pass (167 tests)1991: 72.6% pass (62 tests)1992: 70.3% pass (118 tests)1994: 77.8% pass (275 tests)1995: 69.8% pass (451 tests)1996: 76.7% pass (326 tests)1997: 78.5% pass (79 tests)1998: 80.3% pass (137 tests)2001: 64.8% pass (71 tests)2002: 88.2% pass (51 tests)2003: 79.7% pass (59 tests)198419942003

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.

KAWASAKI GPZ FAQ

answers computed from the data above · terms in the glossary

Is the KAWASAKI GPZ reliable?

The KAWASAKI GPZ is less reliable than average for its class: 74.1% of its 2,509 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #4387 of 5426 models.

What does a GPZ fail its MOT on most?

brakes — 25% of all defects recorded against failed GPZ tests.

What is the best year of GPZ to buy used?

By first-time pass rate, 2002-registered examples do best (88.2%) and 1989 worst (59.8%). Condition and history still trump the year.

How many miles will a GPZ last?

The median GPZ shows 27,727 miles at test, and examples around 50k miles still pass 71.2% of the time — mileage alone rarely kills one.