JAWA 350/640

344cc Petrol Class 2

#1604 of 5426 overall #1 of 7 JAWAs #976 of 2787 other bikes

88.0%

first-time pass rate

5.4%

failed outright

8,638

median miles at test

518

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2013–2024

The 350/640's first-time pass rate has risen 15.7 points since 2013, 71.0% to 86.7%.

Pass rate by mileage

how the 350/640's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage 350/640 passes first time 89.8% of the time; by 20k that's 78.0%.

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 350/640

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
lighting and signalling	16	23.5	0.5×
lamps and reflectors	10	14.7	0.7×
steering and suspension	9	13.2	0.4×
fuel and exhaust	7	10.3	1.5×
tyres and wheels	6	8.8	0.5×
brakes	6	8.8	0.3×
tyres	5	7.4	0.8×
suspension	3	4.4	0.5×
drive system	3	4.4	0.8×
body and structure	3	4.4	1.2×

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 350/640 beats 4 of its 4 closest rivals (SUZUKI AN400, SUZUKI DR-Z400S, YAMAHA RD350).

SUZUKI AN400 86.2% pass · 27.1k tests SUZUKI DR-Z400S 80.4% pass · 26.8k tests YAMAHA RD350 86.3% pass · 19.6k tests KAWASAKI ZXR400 73.1% pass · 14.2k 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 350/640.

Pass rate by registration year

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

Best year to buy used: 1995 (90.3% pass). Weakest: 1998 (70.0%).

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.

JAWA 350/640 FAQ

answers computed from the data above · terms in the glossary

Is the JAWA 350/640 reliable?

The JAWA 350/640 is more reliable than average for its class: 88.0% of its 518 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #1604 of 5426 models.

What does a 350/640 fail its MOT on most?

lighting and signalling — 24% of all defects recorded against failed 350/640 tests.

What is the best year of 350/640 to buy used?

By first-time pass rate, 1995-registered examples do best (90.3%) and 1998 worst (70.0%). Condition and history still trump the year.

How many miles will a 350/640 last?

The median 350/640 shows 8,638 miles at test, and examples around 20k miles still pass 78.0% of the time — mileage alone rarely kills one.