TRIUMPH THUNDERBIRD STORM ABS

1700cc Petrol Class 2

#1666 of 5426 overall #113 of 175 TRIUMPHs #336 of 465 cruiser bikes

87.8%

first-time pass rate

6.9%

failed outright

11,350

median miles at test

623

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2014–2025

The THUNDERBIRD STORM ABS's first-time pass rate has fallen 2.6 points since 2014, 88.6% to 86.0%.

Pass rate by mileage

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

A low-mileage THUNDERBIRD STORM ABS passes first time 89.8% of the time; by 20k that's 86.2%.

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 THUNDERBIRD STORM ABS

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
brakes	12	20.7	0.4×
lamps and reflectors	11	19	0.8×
tyres	7	12.1	1.6×
tyres and wheels	6	10.3	0.5×
suspension	5	8.6	0.9×
lighting and signalling	5	8.6	0.2×
Identification of the vehicle	4	6.9	2.8×
structure and attachments	4	6.9	0.7×
steering and suspension	2	3.4	0.1×
fuel and exhaust	2	3.4	0.4×

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 THUNDERBIRD STORM ABS beats 0 of its 4 closest rivals (HARLEY-DAVIDSON FLSTF, HARLEY-DAVIDSON FLSTC, HARLEY-DAVIDSON XL1200C).

HARLEY-DAVIDSON FLSTF 88.9% pass · 30.1k tests HARLEY-DAVIDSON FLSTC 89.4% pass · 23.7k tests HARLEY-DAVIDSON XL1200C 88.4% pass · 15.7k tests HARLEY-DAVIDSON FXDWG 88.7% pass · 14.6k 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 THUNDERBIRD STORM ABS.

Pass rate by registration year

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

Best year to buy used: 2011 (90.5% pass). Weakest: 2012 (86.1%).

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.

TRIUMPH THUNDERBIRD STORM ABS FAQ

answers computed from the data above · terms in the glossary

Is the TRIUMPH THUNDERBIRD STORM ABS reliable?

The TRIUMPH THUNDERBIRD STORM ABS is more reliable than average for its class: 87.8% of its 623 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #1666 of 5426 models.

What does a THUNDERBIRD STORM ABS fail its MOT on most?

brakes — 21% of all defects recorded against failed THUNDERBIRD STORM ABS tests.

How many miles will a THUNDERBIRD STORM ABS last?

The median THUNDERBIRD STORM ABS shows 11,350 miles at test, and examples around 20k miles still pass 86.2% of the time — mileage alone rarely kills one.