League table/NORTON
Make report · 2005–2025
NORTON
91.9%
first-time pass rate
3.2%
failed outright
58.6k
MOT tests, 2005–2025
NORTON at a glance
Most reliable model
650
98.5% pass
Least reliable model
SS
88.2% pass
Most tested model
COMMANDO
12.3k tests
Among NORTON models with ≥ 100 tests.
What fails a NORTON
failure defects across all NORTON models · advisories excluded
lighting and signalling is NORTON's most common failure — 1.3% of all NORTON tests record one.
| Component group | Share of defects | % of tests | Worst offenders |
|---|---|---|---|
| lighting and signalling |
|
1.3 | see ranking |
| steering and suspension |
|
0.9 | see ranking |
| brakes |
|
0.8 | see ranking |
| tyres and wheels |
|
0.6 | see ranking |
| fuel and exhaust |
|
0.2 | see ranking |
Top failure groups aggregated across every NORTON model, 2005–2025. "% of tests" = share of the make's tests recording at least one defect in that group.
NORTON models, ranked by test volume
45 models with ≥ 100 normal tests, 2005–2025
| Model | Pass rate | Pass % | Fail % | Median miles | Tests |
|---|---|---|---|---|---|
| COMMANDO |
|
90.8 | 4.2 | 18,683 | 12,316 |
| DOMINATOR |
|
92.6 | 1.9 | 9,254 | 3,807 |
| ES2 |
|
91.3 | 2.8 | 12,022 | 2,223 |
| COMMANDER |
|
91.6 | 3.9 | 26,428 | 2,094 |
| TRITON |
|
92.1 | 2.3 | 2,670 | 1,496 |
| ATLAS |
|
92.5 | 2.2 | 8,598 | 1,153 |
| 650SS |
|
93.8 | 1.7 | 8,719 | 1,084 |
| COMANDO |
|
92.6 | 3.1 | 20,686 | 1,012 |
| COMMANDO 750 |
|
90.2 | 4.3 | 14,118 | 869 |
| CLASSIC |
|
94.1 | 2.4 | 10,333 | 826 |
| COMMANDO 850 |
|
91.5 | 3.4 | 18,312 | 816 |
| 99 |
|
93.6 | 1.7 | 12,718 | 767 |
| 16H |
|
93.3 | 2.0 | 7,073 | 688 |
| COMMANDO 961 SPORT |
|
89.2 | 4.3 | 2,656 | 510 |
| MODEL 50 |
|
92.6 | 2.4 | 30,636 | 501 |
| DOMINATOR 99 |
|
90.9 | 3.4 | 12,813 | 471 |
| NAVIGATOR |
|
91.0 | 3.8 | 15,546 | 469 |
| F1 |
|
94.1 | 3.2 | 11,307 | 407 |
| 18 |
|
95.1 | 1.3 | 10,096 | 387 |
| 50 |
|
91.5 | 0.8 | 19,595 | 365 |
| 88 |
|
92.5 | 2.2 | 8,555 | 359 |
| 500 |
|
95.3 | 1.3 | 9,209 | 320 |
| 750 |
|
94.4 | 3.3 | 14,206 | 303 |
| DOMINATOR 88 |
|
92.7 | 3.3 | 15,949 | 300 |
| JUBILEE |
|
90.6 | 6.0 | 15,021 | 298 |
| INTERNATIONAL |
|
95.1 | 0.3 | 7,076 | 288 |
| 850 |
|
92.7 | 1.0 | 23,840 | 287 |
| 850 COMMANDO |
|
89.2 | 5.2 | 23,520 | 269 |
| 750 COMMANDO |
|
92.2 | 3.7 | 15,939 | 217 |
| COMMANDO 961 CAFE RACER |
|
89.5 | 6.2 | 2,122 | 210 |
| NORTON |
|
93.8 | 2.4 | 7,116 | 209 |
| MERCURY |
|
89.2 | 3.4 | 11,345 | 204 |
| SS |
|
88.2 | 3.4 | 10,495 | 204 |
| P11 |
|
93.0 | 1.0 | 3,051 | 201 |
| INTERPOL 2 |
|
95.5 | 2.5 | 16,791 | 198 |
| MODEL 18 |
|
95.3 | 0.5 | 8,790 | 190 |
| ELECTRA |
|
92.4 | 1.3 | 13,084 | 158 |
| 600 |
|
94.8 | 3.2 | 8,928 | 154 |
| 650 |
|
98.5 | 0.0 | 3,998 | 136 |
| 19S |
|
95.5 | 3.0 | 10,712 | 133 |
| MODEL 7 |
|
91.9 | 4.0 | 8,528 | 124 |
| 500T |
|
97.4 | 0.0 | 1,781 | 117 |
| MANX |
|
98.3 | 0.9 | 2,366 | 116 |
| ROADSTER |
|
92.2 | 3.9 | 13,256 | 102 |
| BIG 4 |
|
98.0 | 1.0 | 7,104 | 101 |
Normal tests only. Median miles is odometer reading at test where recorded. Source: DVSA anonymised MOT results, 2005–2025.
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