VESPA (DOUGLAS) COSA

198cc Petrol Class 1

79.9%

first-time pass rate

13.2%

failed outright

11,902

median miles at test

144

MOT tests, 2005–2025

What fails on a COSA

failure defects by component group · advisories excluded

Component group	Defects	% of defects
lighting and signalling	14	31.8
brakes	13	29.5
lamps and reflectors	8	18.2
tyres and wheels	3	6.8
lamps and reflectors	2	4.5
steering and suspension	2	4.5
suspension	1	2.3
fuel and exhaust	1	2.3

Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects.

How rivals compare

same type, similar capacity, high test volume

On first-time pass rate the COSA beats 1 of its 4 closest rivals (PIAGGIO PX 200 E, PIAGGIO X9, LAMBRETTA GP200).

PIAGGIO PX 200 E 86.5% pass · 28.4k tests PIAGGIO X9 77.0% pass · 21.7k tests LAMBRETTA GP200 87.8% pass · 19.9k tests LAMBRETTA LI150 88.8% pass · 19.3k 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 COSA.

Pass rate by registration year

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

Best year to buy used: 1990 (72.9% pass). Weakest: 1990 (72.9%).

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.