BIKERELIABILITY Reg check
Registration-year report · 2005–2025

Data as of: DVSA MOT results to 2025

Suzuki GSX400: MOT pass rate by registration year

Which GSX400 years pass first time, and which fall short of the model's 74.5% average, from 2,161 DVSA tests.

1996
highest-passing year · 80.0%
1985
lowest-passing year · 69.4%
10.6pp
spread across 15 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: 1996 (80.0% of 55 tests). Lowest: 1985 (69.4% of 85). Years more than two points below the model average: 1983, 1985, 1988, 1989, 1990, 1991.

67%75%82%1981: 76.0% pass (229 tests)1982: 76.7% pass (292 tests)1983: 71.6% pass (243 tests)1984: 75.1% pass (289 tests)1985: 69.4% pass (85 tests)1986: 72.7% pass (77 tests)1988: 71.3% pass (108 tests)1989: 71.6% pass (95 tests)1990: 69.7% pass (66 tests)1991: 71.3% pass (80 tests)1992: 78.6% pass (140 tests)1993: 73.7% pass (57 tests)1994: 75.3% pass (81 tests)1995: 76.1% pass (67 tests)1996: 80.0% pass (55 tests)198119891996
RegisteredTestsFirst-time passvs model (74.5%)
1981 229 76.0% +1.5 pp
1982 292 76.7% +2.2 pp
1983 243 71.6% -2.9 pp
1984 289 75.1% +0.6 pp
1985 85 69.4% -5.1 pp
1986 77 72.7% -1.8 pp
1988 108 71.3% -3.2 pp
1989 95 71.6% -2.9 pp
1990 66 69.7% -4.8 pp
1991 80 71.3% -3.2 pp
1992 140 78.6% +4.1 pp
1993 57 73.7% -0.8 pp
1994 81 75.3% +0.8 pp
1995 67 76.1% +1.6 pp
1996 55 80.0% +5.5 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
54%75%96%2005: 75.8% pass (62 tests)2006: 71.6% pass (275 tests)2007: 75.0% pass (212 tests)2008: 72.6% pass (179 tests)2009: 78.3% pass (166 tests)2010: 74.1% pass (143 tests)2011: 73.3% pass (146 tests)2012: 76.2% pass (130 tests)2013: 60.8% pass (120 tests)2014: 72.5% pass (109 tests)2015: 76.5% pass (98 tests)2016: 78.8% pass (85 tests)2017: 79.8% pass (84 tests)2018: 71.4% pass (49 tests)2019: 80.0% pass (55 tests)2020: 88.9% pass (45 tests)2021: 79.5% pass (73 tests)2022: 80.8% pass (52 tests)2023: 64.9% pass (37 tests)20052023

Questions

Which GSX400 years have the lowest MOT pass rate?
1983, 1985, 1988, 1989, 1990, 1991 registered examples pass first time less often than the Suzuki GSX400 overall (74.5%); the 1985 cohort is lowest at 69.4% from 85 tests.
Which GSX400 year has the highest MOT pass rate?
1996, at 80.0% of 55 first tests (2005–2025). Years more than two points above the model average: 1982, 1992, 1996.
How much does the GSX400 pass rate vary by year?
10.6 percentage points between the highest (1996, 80.0%) and lowest (1985, 69.4%) 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: Suzuki GSX400 reliability, failures and mileage · ranked #4355 of 5428 models· other Suzuki models: GSXR600, GSF600, GSXR750, GSF1200, GSXR1000, SV650S