BIKERELIABILITY Reg check
League table/ YAMAHA/ T80/By year
Registration-year report · 2005–2025

Data as of: DVSA MOT results to 2025

Yamaha T80: MOT pass rate by registration year

Which T80 years pass first time, and which fall short of the model's 76.1% average, from 3,798 DVSA tests.

1983
highest-passing year · 88.9%
1997
lowest-passing year · 70.0%
18.9pp
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: 1983 (88.9% of 81 tests). Lowest: 1997 (70.0% of 203). Years more than two points below the model average: 1986, 1988, 1989, 1990, 1995, 1997.

66%79%93%1983: 88.9% pass (81 tests)1984: 79.3% pass (237 tests)1985: 79.9% pass (309 tests)1986: 72.5% pass (211 tests)1987: 75.4% pass (195 tests)1988: 72.7% pass (308 tests)1989: 72.5% pass (284 tests)1990: 71.0% pass (473 tests)1991: 77.9% pass (204 tests)1992: 77.1% pass (166 tests)1993: 79.6% pass (226 tests)1994: 78.2% pass (307 tests)1995: 73.8% pass (160 tests)1996: 79.9% pass (328 tests)1997: 70.0% pass (203 tests)198319901997
RegisteredTestsFirst-time passvs model (76.1%)
1983 81 88.9% +12.8 pp
1984 237 79.3% +3.2 pp
1985 309 79.9% +3.8 pp
1986 211 72.5% -3.6 pp
1987 195 75.4% -0.7 pp
1988 308 72.7% -3.4 pp
1989 284 72.5% -3.6 pp
1990 473 71.0% -5.1 pp
1991 204 77.9% +1.8 pp
1992 166 77.1% +1.0 pp
1993 226 79.6% +3.5 pp
1994 307 78.2% +2.1 pp
1995 160 73.8% -2.3 pp
1996 328 79.9% +3.8 pp
1997 203 70.0% -6.1 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 · 2005–2025
64%82%100%2005: 73.1% pass (134 tests)2006: 70.1% pass (488 tests)2007: 73.2% pass (396 tests)2008: 75.0% pass (336 tests)2009: 73.2% pass (269 tests)2010: 74.1% pass (243 tests)2011: 72.9% pass (229 tests)2012: 80.4% pass (219 tests)2013: 74.6% pass (185 tests)2014: 73.4% pass (192 tests)2015: 79.5% pass (156 tests)2016: 80.0% pass (130 tests)2017: 83.7% pass (147 tests)2018: 81.7% pass (93 tests)2019: 87.8% pass (82 tests)2020: 72.7% pass (88 tests)2021: 81.9% pass (94 tests)2022: 86.7% pass (98 tests)2023: 77.8% pass (90 tests)2024: 83.3% pass (66 tests)2025: 93.7% pass (63 tests)20052025

Questions

Which T80 years have the lowest MOT pass rate?
1986, 1988, 1989, 1990, 1995, 1997 registered examples pass first time less often than the Yamaha T80 overall (76.1%); the 1997 cohort is lowest at 70.0% from 203 tests.
Which T80 year has the highest MOT pass rate?
1983, at 88.9% of 81 first tests (2005–2025). Years more than two points above the model average: 1983, 1984, 1985, 1993, 1994, 1996.
How much does the T80 pass rate vary by year?
18.9 percentage points between the highest (1983, 88.9%) and lowest (1997, 70.0%) 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: Yamaha T80 reliability, failures and mileage · ranked #4173 of 5428 models· other Yamaha models: YZF-R1, YZF-R6, FZS600, YBR 125, XJR1300, FZ6