LAMBRETTA GP
The pass rate is the MOT first-time pass: a roadworthiness check of the items an MOT covers (brakes, lights, tyres, steering, structure, emissions), not a full mechanical inspection of engine or gearbox internals. It is a reliability signal, not a complete measure of mechanical reliability. What this measures.
“vs expected” adjusts for age, mileage and test class, so a cherished classic and a hard-used commuter are compared fairly. How this works.
Pass rate over time
The GP's first-time pass rate has held steady since 2006 (89.0% → 89.8%).
Pass rate by mileage
A low-mileage GP passes first time 85.9% of the time; by 40k that's 100.0%.
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 GP
| Component group | Share of defects | Defects | % of defects | vs all bikes |
|---|---|---|---|---|
| lighting and signalling |
|
226 | 36.8 | 0.7× |
| brakes |
|
160 | 26.1 | 0.6× |
| steering and suspension |
|
96 | 15.6 | 0.5× |
| tyres and wheels |
|
39 | 6.4 | 0.4× |
| lamps and reflectors |
|
29 | 4.7 | 0.3× |
| fuel and exhaust |
|
18 | 2.9 | 0.4× |
| reg plates and vin |
|
17 | 2.8 | 0.6× |
| body and structure |
|
11 | 1.8 | 0.5× |
| steering |
|
9 | 1.5 | 0.4× |
| Items Not Tested |
|
9 | 1.5 | 0.7× |
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
On first-time pass rate the GP beats 4 of its 4 closest rivals (PIAGGIO VESPA, HONDA PCX 125, HONDA Vision 110).
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 GP.
Compare with any bike
More LAMBRETTA models
Pass rate by registration year
Best year to buy used: 1968 (93.5% pass). Weakest: 1982 (78.3%).
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.
LAMBRETTA GP FAQ
Is the LAMBRETTA GP reliable?
The LAMBRETTA GP is more reliable than average for its class: 86.5% of its 4,487 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #2052 of 5428 models.
What does a GP fail its MOT on most?
lighting and signalling — 37% of all defects recorded against failed GP tests.
What is the best year of GP to buy used?
By first-time pass rate, 1968-registered examples do best (93.5%) and 1982 worst (78.3%). Condition and history still trump the year.
How many miles will a GP last?
The median GP shows 2,252 miles at test, and examples around 40k miles still pass 100.0% of the time — mileage alone rarely kills one.
Embed this bike
Free to embed on your site, blog or forum — a live Lambretta GP reliability card that stays up to date and links back here. More on the free API page.