Triumph STREET 660-765cc MOT pass rate and common failures

Triumph STREET 660-765cc motorcycles pass the MOT 91.89% of the time, measured across 3,218 tests in the DVSA record. A further 4.01% passed only after a defect was put right at the test station.

Calculated from DVSA records for Triumph STREET, 660-765cc.

Better than average: 5 points above the 86.87% figure for all motorcycles tested.

Pass rate 91.89% 2,957 of 3,218

Fixed at the station 4.01% passed after an on-the-spot repair

Average mileage at test 11,419 miles

Average age at test 7.16 years old

Engine 759cc MOT class 1 and 2

For sale now 0 Triumph STREET 660-765cc adverts

What to check before the MOT

Built from this model's own failure record, not general advice.

Start with missing - it accounts for 50% of failed tests on this model.
Then check not working and tread depth is below minimum requirements of 1.0mm, the next two most common reasons.
Age matters here: 92.47% of 3-5 year old examples pass, against 85.71% at 11-15 years - a gap of 6.8 points.
The most common advisory is noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition (7.4% of all tests) - not a failure, but money you will spend sooner or later.
Average recorded mileage at test is 11,419 miles, which is the number to compare any advert against.

Pass rate by age

A single pass rate hides the most useful thing in this data: how the same model behaves at three years old and at fifteen.

Age at test	Pass rate	Tests
3-5 years	92.47%	531
6-10 years	92.03%	2,609
11-15 years	85.71%	63

Why the Triumph STREET 660-765cc fails

Share of failed tests on this model where the item was recorded. One test can fail on several items, so the column does not add up to 100%.

#	Item	Of failures	Tests
1	Missing	50%	66
2	Not working	35.6%	47
3	Tread depth is below minimum requirements of 1.0mm	19.7%	26
4	Does not conform to the specified requirements	15.9%	21
5	Too low	12.1%	16
6	Inoperative in the case of a single lamp or all lamps	11.4%	15
7	Indicates excessive fluctuation of brake effort	10.6%	14
8	Less than 1.0 mm thick	10.6%	14
9	Not working on dipped beam	10.6%	14
10	Has a serious fluid leak	9.1%	12

Most common advisories

Not a failure and not a legal requirement to fix - but an advisory that repeats year after year is money the next owner spends.

#	Item	Of all tests	Tests
1	Noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition	7.4%	237
2	Tread depth is below minimum requirements of 1.0mm	5.8%	187
3	Indicates excessive fluctuation of brake effort	3.9%	126
4	Less than 1.0 mm thick	3.2%	103
5	Excessively loose	1.8%	57
6	Tread not clearly visible	1.5%	49
7	Excessively stiff or notchy	1%	32
8	Worn to excess	0.7%	24
9	Excessively binding	0.7%	23
10	Significantly and obviously worn	0.6%	18

Triumph STREET 660-765cc for sale

No Triumph STREET 660-765cc in stock at the moment - 108 other Triumph bikes are advertised.

Used Triumph STREET 660-765cc Used Triumph All Triumph Triumph MOT statistics Check a specific bike by plate

Similar bikes compared

Models of comparable capacity, so the comparison means something.

Model	Tests	Pass rate	Avg mileage
Triumph TIGER · 969cc	16,144	91.27%	22,934
Triumph BONNEVILLE 642-904cc · 642-904cc	12,456	90.8%	12,824
Yamaha MT 800-1000cc · 800-1000cc	5,720	90.98%	16,130
Honda NC · 741cc	5,311	89.53%	22,765
Honda CBR600F · 599cc	4,914	85.61%	30,486
Suzuki GSF600 · 600cc	4,890	80%	29,308

Source: DVSA MOT testing data, 2025 · updated Aug 2026 · licence and method

Triumph STREET 660-765cc MOT questions

What is the MOT pass rate for the Triumph STREET 660-765cc?+

91.89% of Triumph STREET 660-765cc MOT tests end in a pass, based on 3,218 tests in the DVSA dataset.

What is the most common MOT failure on a Triumph STREET 660-765cc?+

Missing, which appears in 50% of failed tests on this model.

Does the Triumph STREET 660-765cc get harder to pass as it ages?+

At 11-15 years old the pass rate is 85.71%, against 92.47% for examples 3-5 years old.

Where does this data come from?+

From the DVSA anonymised MOT testing dataset, which records every MOT carried out in England, Scotland and Wales. It is published under the Open Government Licence and covers 2025.

Does a high pass rate mean the bike is reliable?+

Not by itself. The MOT checks safety items - brakes, tyres, lights, structure - and says nothing about engines, gearboxes or electrics. Read it as a maintenance signal, not a reliability score.