Pass rate over time
The HD ORBIT's first-time pass rate has fallen 13.5 points since 2009, 77.1% to 63.6%.
Pass rate by mileage
A low-mileage HD ORBIT passes first time 84.2% of the time; by 40k that's 73.3%.
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 HD ORBIT
| Component group | Share of defects | Defects | % of defects | vs all bikes |
|---|---|---|---|---|
| brakes |
|
41 | 31.3 | 1.0× |
| lighting and signalling |
|
26 | 19.8 | 0.8× |
| tyres and wheels |
|
22 | 16.8 | 1.5× |
| lamps and reflectors |
|
10 | 7.6 | 0.7× |
| steering and suspension |
|
9 | 6.9 | 0.4× |
| fuel and exhaust |
|
6 | 4.6 | 1.0× |
| suspension |
|
5 | 3.8 | 1.0× |
| structure and attachments |
|
5 | 3.8 | 0.7× |
| tyres |
|
4 | 3.1 | 0.7× |
| body and structure |
|
3 | 2.3 | 0.9× |
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 HD ORBIT beats 3 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 HD ORBIT.
Pass rate by registration year
Best year to buy used: 2008 (90.4% pass). Weakest: 2005 (75.7%).
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.
SYM HD ORBIT FAQ
Is the SYM HD ORBIT reliable?
The SYM HD ORBIT is more reliable than average for its class: 82.2% of its 667 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #3146 of 5426 models.
What does a HD ORBIT fail its MOT on most?
brakes — 31% of all defects recorded against failed HD ORBIT tests.
What is the best year of HD ORBIT to buy used?
By first-time pass rate, 2008-registered examples do best (90.4%) and 2005 worst (75.7%). Condition and history still trump the year.
How many miles will a HD ORBIT last?
The median HD ORBIT shows 13,396 miles at test, and examples around 40k miles still pass 73.3% of the time — mileage alone rarely kills one.