BIKERELIABILITY Reg check
Registration-year report · 2005–2025

Data as of: DVSA MOT results to 2025

Yamaha DT 125 R: MOT pass rate by registration year

Which DT 125 R years pass first time, and which fall short of the model's 67.0% average, from 2,261 DVSA tests.

1992
highest-passing year · 72.6%
1993
lowest-passing year · 45.1%
27.5pp
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: 1992 (72.6% of 84 tests). Lowest: 1993 (45.1% of 51). Years more than two points below the model average: 1989, 1991, 1993, 1997, 1998, 2000.

40%59%78%1989: 62.5% pass (56 tests)1990: 71.0% pass (124 tests)1991: 62.1% pass (87 tests)1992: 72.6% pass (84 tests)1993: 45.1% pass (51 tests)1997: 64.2% pass (67 tests)1998: 58.2% pass (110 tests)1999: 68.6% pass (137 tests)2000: 60.6% pass (226 tests)2001: 71.6% pass (317 tests)2002: 69.6% pass (342 tests)2003: 66.0% pass (338 tests)198919982003
RegisteredTestsFirst-time passvs model (67.0%)
1989 56 62.5% -4.5 pp
1990 124 71.0% +4.0 pp
1991 87 62.1% -4.9 pp
1992 84 72.6% +5.6 pp
1993 51 45.1% -21.9 pp
1997 67 64.2% -2.8 pp
1998 110 58.2% -8.8 pp
1999 137 68.6% +1.6 pp
2000 226 60.6% -6.4 pp
2001 317 71.6% +4.6 pp
2002 342 69.6% +2.6 pp
2003 338 66.0% -1.0 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
54%72%91%2005: 68.4% pass (79 tests)2006: 60.3% pass (325 tests)2007: 61.4% pass (308 tests)2008: 60.4% pass (217 tests)2009: 61.0% pass (141 tests)2010: 70.1% pass (97 tests)2011: 69.7% pass (89 tests)2012: 65.1% pass (86 tests)2013: 61.5% pass (91 tests)2014: 71.7% pass (99 tests)2015: 70.5% pass (95 tests)2016: 75.9% pass (87 tests)2017: 72.9% pass (70 tests)2018: 71.2% pass (66 tests)2019: 76.1% pass (67 tests)2020: 75.0% pass (56 tests)2021: 78.2% pass (55 tests)2022: 70.6% pass (68 tests)2023: 77.8% pass (63 tests)2024: 77.3% pass (44 tests)2025: 84.5% pass (58 tests)20052025

Questions

Which DT 125 R years have the lowest MOT pass rate?
1989, 1991, 1993, 1997, 1998, 2000 registered examples pass first time less often than the Yamaha DT 125 R overall (67.0%); the 1993 cohort is lowest at 45.1% from 51 tests.
Which DT 125 R year has the highest MOT pass rate?
1992, at 72.6% of 84 first tests (2005–2025). Years more than two points above the model average: 1990, 1992, 2001, 2002.
How much does the DT 125 R pass rate vary by year?
27.5 percentage points between the highest (1992, 72.6%) and lowest (1993, 45.1%) 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 DT 125 R reliability, failures and mileage · ranked #4907 of 5428 models· other Yamaha models: YZF-R1, YZF-R6, FZS600, YBR 125, XJR1300, FZ6