Harley-Davidson FXBB STREET BOB 1745 18 MOT pass rate and common failures

Harley-Davidson FXBB STREET BOB 1745 18 motorcycles pass the MOT 91.43% of the time, measured across 210 tests in the DVSA record. A further 4.76% passed only after a defect was put right at the test station.

Better than average: 4.6 points above the 86.87% figure for all motorcycles tested.

Pass rate 91.43% 192 of 210

Fixed at the station 4.76% passed after an on-the-spot repair

Average mileage at test 10,142 miles

Average age at test 7.1 years old

Engine 1,746cc MOT class 1 and 2

For sale now 0 Harley-Davidson FXBB STREET BOB 1745 18 adverts

What to check before the MOT

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

Start with less than 1.0 mm thick - it accounts for 37.5% of failed tests on this model.
Then check not working and too high, the next two most common reasons.
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 (24.3% of all tests) - not a failure, but money you will spend sooner or later.
Average recorded mileage at test is 10,142 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
6-10 years	91.26%		206

Why the Harley-Davidson FXBB STREET BOB 1745 18 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	Less than 1.0 mm thick	37.5%	3
2	Not working	37.5%	3
3	Too high	37.5%	3
4	Tread depth is below minimum requirements of 1.0mm	37.5%	3
5	Does not conform to the specified requirements	25%	2
6	Grip insecure to handlebar	25%	2
7	Indicates excessive fluctuation of brake effort	25%	2
8	Inoperative in the case of a single lamp or all lamps	25%	2
9	Light intensity obviously reduced	25%	2
10	Missing	25%	2

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	24.3%	51
2	Tread depth is below minimum requirements of 1.0mm	2.9%	6
3	Less than 1.0 mm thick	1.9%	4
4	Excessively distorted	1%	2
5	Spoke excessively corroded	1%	2
6	Excessively corroded	0.5%	1
7	In such a condition that it is seriously weakened	0.5%	1
8	Incorrect colour	0.5%	1
9	Indicates excessive fluctuation of brake effort	0.5%	1
10	Is bent and the brake cannot be readily applied	0.5%	1

Harley-Davidson FXBB STREET BOB 1745 18 for sale

No Harley-Davidson FXBB STREET BOB 1745 18 in stock at the moment - 48 other Harley-Davidson bikes are advertised.

Used Harley-Davidson FXBB STREET BOB 1745 18 Used Harley-Davidson All Harley-Davidson Harley-Davidson MOT statistics

Similar bikes compared

Models of comparable capacity, so the comparison means something.

Model	Tests	Pass rate	Avg mileage
BMW R1250 · 1,254cc	6,764	96.17%	17,373
Yamaha XJR1300 · 1,251cc	3,805	90.43%	26,274
BMW R 1250 GS ADVENTURE TE · 1,254cc	2,946	96.33%	12,375
BMW R 1250 GS TE · 1,254cc	2,512	96.46%	12,060
Suzuki GSX1400 · 1,402cc	2,352	91.54%	26,720
Honda ST1300 · 1,261cc	1,866	88.96%	47,954

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

Harley-Davidson FXBB STREET BOB 1745 18 MOT questions

What is the MOT pass rate for the Harley-Davidson FXBB STREET BOB 1745 18?+

91.43% of Harley-Davidson FXBB STREET BOB 1745 18 MOT tests end in a pass, based on 210 tests in the DVSA dataset.

What is the most common MOT failure on a Harley-Davidson FXBB STREET BOB 1745 18?+

Less than 1.0 mm thick, which appears in 37.5% of failed tests on this model.

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.