BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
Model report · 2005–2025

BSA A65L

650cc Petrol Class 2
#680 of 5426 overall #31 of 62 BSAs #414 of 2787 other bikes
91.0%
first-time pass rate
2.1%
failed outright
10,394
median miles at test
619
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2006–2017

The A65L's first-time pass rate has risen 7.8 points since 2006, 88.0% to 95.8%.

75%88%100%2006: 88.0% pass (50 tests)2007: 84.8% pass (46 tests)2008: 89.1% pass (46 tests)2009: 94.9% pass (39 tests)2010: 79.5% pass (39 tests)2011: 87.5% pass (40 tests)2012: 82.9% pass (41 tests)2013: 92.6% pass (54 tests)2014: 96.2% pass (53 tests)2015: 92.9% pass (56 tests)2016: 94.9% pass (59 tests)2017: 95.8% pass (48 tests)20062017

Pass rate by mileage

how the A65L's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage A65L passes first time 90.4% of the time; by 40k that's 90.3%.

85%91%97%0k: 90.4% pass (301 tests)10k: 94.9% pass (117 tests)20k: 86.7% pass (60 tests)30k: 90.0% pass (80 tests)40k: 90.3% pass (31 tests)0k20k40k

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 A65L

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects vs all bikes
lighting and signalling
10 43.5 0.3×
steering and suspension
6 26.1 0.2×
brakes
5 21.7 0.1×
tyres and wheels
2 8.7 0.2×

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 A65L beats 4 of its 4 closest rivals (KAWASAKI ZX-6R, SUZUKI GSF600, YAMAHA FZS600).

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 A65L.

Pass rate by registration year

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

Best year to buy used: 1968 (92.1% pass). Weakest: 1972 (82.1%).

80%87%94%1966: 91.3% pass (104 tests)1968: 92.1% pass (63 tests)1969: 89.1% pass (55 tests)1970: 92.0% pass (113 tests)1971: 92.0% pass (150 tests)1972: 82.1% pass (56 tests)196619701972

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.

BSA A65L FAQ

answers computed from the data above · terms in the glossary

Is the BSA A65L reliable?

The BSA A65L is more reliable than average for its class: 91.0% of its 619 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #680 of 5426 models.

What does a A65L fail its MOT on most?

lighting and signalling — 43% of all defects recorded against failed A65L tests.

What is the best year of A65L to buy used?

By first-time pass rate, 1968-registered examples do best (92.1%) and 1972 worst (82.1%). Condition and history still trump the year.

How many miles will a A65L last?

The median A65L shows 10,394 miles at test, and examples around 40k miles still pass 90.3% of the time — mileage alone rarely kills one.