SUZUKI GT380

371cc Petrol Class 2

#1369 of 5426 overall #153 of 680 SUZUKIs #838 of 2787 other bikes

88.7%

first-time pass rate

4.6%

failed outright

20,202

median miles at test

2,155

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2006–2019

The GT380's first-time pass rate has risen 3.5 points since 2006, 87.9% to 91.4%.

Pass rate by mileage

how the GT380's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage GT380 passes first time 88.8% of the time; by 50k that's 91.9%.

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 GT380

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
steering and suspension	68	30.2	0.7×
lighting and signalling	50	22.2	0.4×
brakes	36	16	0.3×
tyres and wheels	29	12.9	0.5×
fuel and exhaust	13	5.8	0.6×
drive system	12	5.3	0.6×
body and structure	8	3.6	0.6×
lamps and reflectors	6	2.7	0.1×
reg plates and vin	2	0.9	0.2×
structure and attachments	1	0.4	0.1×

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 GT380 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 GT380.

Pass rate by registration year

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

Best year to buy used: 1977 (92.0% pass). Weakest: 1971 (79.3%).

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.

SUZUKI GT380 FAQ

answers computed from the data above · terms in the glossary

Is the SUZUKI GT380 reliable?

The SUZUKI GT380 is more reliable than average for its class: 88.7% of its 2,155 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #1369 of 5426 models.

What does a GT380 fail its MOT on most?

steering and suspension — 30% of all defects recorded against failed GT380 tests.

What is the best year of GT380 to buy used?

By first-time pass rate, 1977-registered examples do best (92.0%) and 1971 worst (79.3%). Condition and history still trump the year.

How many miles will a GT380 last?

The median GT380 shows 20,202 miles at test, and examples around 50k miles still pass 91.9% of the time — mileage alone rarely kills one.