KAWASAKI ZEPHYR 550

553cc Petrol Class 2

#3932 of 5426 overall #463 of 592 KAWASAKIs #2487 of 2787 other bikes

77.9%

first-time pass rate

15.2%

failed outright

22,978

median miles at test

7,405

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2005–2025

The ZEPHYR 550's first-time pass rate has risen 12.9 points since 2005, 76.8% to 89.7%.

Pass rate by mileage

how the ZEPHYR 550's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage ZEPHYR 550 passes first time 87.7% of the time; by 50k that's 72.7%.

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 ZEPHYR 550

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
brakes	824	31.9	1.8×
steering and suspension	593	22.9	1.9×
lighting and signalling	433	16.8	1.0×
tyres and wheels	204	7.9	1.2×
drive system	164	6.3	2.2×
fuel and exhaust	108	4.2	1.7×
lamps and reflectors	91	3.5	0.5×
driving controls	61	2.4	3.4×
reg plates and vin	54	2.1	1.1×
structure and attachments	52	2	0.8×

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 ZEPHYR 550 beats 1 of its 4 closest rivals (KAWASAKI ZX-6R, SUZUKI GSF600, YAMAHA FZS600).

KAWASAKI ZX-6R 78.1% pass · 174k tests SUZUKI GSF600 77.3% pass · 143k tests YAMAHA FZS600 82.6% pass · 137k tests SUZUKI SV650S 80.6% pass · 84.6k 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 ZEPHYR 550.

Pass rate by registration year

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

Best year to buy used: 1999 (90.5% pass). Weakest: 2000 (71.4%).

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 ZEPHYR 550 FAQ

answers computed from the data above · terms in the glossary

Is the KAWASAKI ZEPHYR 550 reliable?

The KAWASAKI ZEPHYR 550 is less reliable than average for its class: 77.9% of its 7,405 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #3932 of 5426 models.

What does a ZEPHYR 550 fail its MOT on most?

brakes — 32% of all defects recorded against failed ZEPHYR 550 tests.

What is the best year of ZEPHYR 550 to buy used?

By first-time pass rate, 1999-registered examples do best (90.5%) and 2000 worst (71.4%). Condition and history still trump the year.

How many miles will a ZEPHYR 550 last?

The median ZEPHYR 550 shows 22,978 miles at test, and examples around 50k miles still pass 72.7% of the time — mileage alone rarely kills one.