BIKERELIABILITY Reg check
Registration-year report · 2005–2025

Data as of: DVSA MOT results to 2025

Norton Commander: MOT pass rate by registration year

Which Commander years pass first time, and which fall short of the model's 91.6% average, from 2,094 DVSA tests.

1976
highest-passing year · 95.3%
1977
lowest-passing year · 88.7%
6.6pp
spread across 12 years

Pass rate by registration year

first-time pass rate · cohorts with 50 or more tests · registration year from first use date

Highest pass rate: 1976 (95.3% of 86 tests). Lowest: 1977 (88.7% of 53). Years more than two points below the model average: 1977.

87%92%97%1971: 91.2% pass (340 tests)1972: 90.2% pass (92 tests)1973: 93.6% pass (110 tests)1974: 91.9% pass (124 tests)1975: 94.5% pass (110 tests)1976: 95.3% pass (86 tests)1977: 88.7% pass (53 tests)1989: 90.5% pass (390 tests)1990: 91.7% pass (156 tests)1991: 94.0% pass (67 tests)1992: 94.1% pass (185 tests)1993: 90.7% pass (118 tests)197119771993
RegisteredTestsFirst-time passvs model (91.6%)
1971 340 91.2% -0.4 pp
1972 92 90.2% -1.4 pp
1973 110 93.6% +2.0 pp
1974 124 91.9% +0.3 pp
1975 110 94.5% +2.9 pp
1976 86 95.3% +3.7 pp
1977 53 88.7% -2.9 pp
1989 390 90.5% -1.1 pp
1990 156 91.7% +0.1 pp
1991 67 94.0% +2.4 pp
1992 185 94.1% +2.5 pp
1993 118 90.7% -0.9 pp

Older cohorts are survivors: the worst examples have already left the road, which tends to lift the earliest years. A first-time MOT pass is a roadworthiness check, not a full mechanical inspection.

Pass rate over time

first-time pass rate by test year · 2005–2023
82%91%100%2005: 97.4% pass (39 tests)2006: 89.8% pass (196 tests)2007: 89.0% pass (172 tests)2008: 85.3% pass (156 tests)2009: 93.0% pass (142 tests)2010: 92.8% pass (152 tests)2011: 89.3% pass (150 tests)2012: 93.4% pass (137 tests)2013: 93.8% pass (144 tests)2014: 95.1% pass (143 tests)2015: 97.9% pass (140 tests)2016: 95.2% pass (146 tests)2017: 88.3% pass (103 tests)2018: 92.0% pass (50 tests)2019: 90.5% pass (42 tests)2021: 88.1% pass (42 tests)2022: 91.4% pass (35 tests)2023: 93.3% pass (30 tests)20052023

Questions

Which Commander years have the lowest MOT pass rate?
1977 registered examples pass first time less often than the Norton Commander overall (91.6%); the 1977 cohort is lowest at 88.7% from 53 tests.
Which Commander year has the highest MOT pass rate?
1976, at 95.3% of 86 first tests (2005–2025). Years more than two points above the model average: 1975, 1976, 1991, 1992.
How much does the Commander pass rate vary by year?
6.6 percentage points between the highest (1976, 95.3%) and lowest (1977, 88.7%) cohorts with at least 50 tests. Older cohorts are survivors: the worst examples have already left the road, which tends to lift the earliest years.

Full report: Norton Commander reliability, failures and mileage · ranked #546 of 5428 models· other Norton models: Commando, Dominator, ES2, Triton, Atlas, 650SS