BIKERELIABILITY Reg check
League table/ TRIUMPH/DAYTONA 955I SS
Model report · 2005–2025

Data as of: DVSA MOT results to 2025

TRIUMPH DAYTONA 955I SS

955cc Petrol Class 2
#1505 of 5428 overall #106 of 175 TRIUMPHs #62 of 226 sport bikes
88.3%
first-time pass rate
6.9%
failed outright
14,557
median miles at test
802
MOT tests, 2005–2025
+3.2pp
vs expected · age & mileage

The pass rate is the MOT first-time pass: a roadworthiness check of the items an MOT covers (brakes, lights, tyres, steering, structure, emissions), not a full mechanical inspection of engine or gearbox internals. It is a reliability signal, not a complete measure of mechanical reliability. What this measures.

“vs expected” adjusts for age, mileage and test class, so a cherished classic and a hard-used commuter are compared fairly. How this works.

Pass rate over time

first-time pass rate by test year · 2007–2023

The DAYTONA 955I SS's first-time pass rate has risen 2.3 points since 2007, 82.5% to 84.8%.

79%89%100%2007: 82.5% pass (40 tests)2008: 86.0% pass (43 tests)2009: 82.5% pass (63 tests)2010: 83.6% pass (55 tests)2011: 90.9% pass (55 tests)2012: 91.8% pass (49 tests)2013: 93.5% pass (46 tests)2014: 88.4% pass (43 tests)2015: 86.3% pass (51 tests)2016: 86.7% pass (45 tests)2017: 89.5% pass (38 tests)2018: 97.0% pass (33 tests)2019: 89.7% pass (39 tests)2021: 86.1% pass (36 tests)2022: 95.3% pass (43 tests)2023: 84.8% pass (33 tests)20072023

Pass rate by mileage

how the DAYTONA 955I SS's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage DAYTONA 955I SS passes first time 88.8% of the time; by 40k that's 86.1%.

78%85%92%0k: 88.8% pass (249 tests)10k: 88.5% pass (270 tests)20k: 90.4% pass (146 tests)30k: 80.0% pass (75 tests)40k: 86.1% pass (36 tests)0k20k40k

First-time pass rate by odometer reading at test, 10,000-mile bands for this model. Mileage is the strongest reliability signal. See the full curve.

What fails on a DAYTONA 955I SS

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects vs all bikes
brakes
31 31.6 0.7×
steering and suspension
16 16.3 0.5×
tyres and wheels
11 11.2 0.5×
lighting and signalling
9 9.2 0.3×
suspension
9 9.2 1.4×
reg plates and vin
7 7.1 1.3×
fuel and exhaust
5 5.1 0.7×
drive system
4 4.1 0.7×
lamps and reflectors
4 4.1 0.2×
tyres
2 2 0.4×

Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects. "vs all bikes" is how often this model's tests record a defect in the group, as a multiple of the all-bike rate.

How rivals compare

same type, similar capacity, high test volume

On first-time pass rate the DAYTONA 955I SS beats 4 of its 4 closest rivals (YAMAHA YZF-R1, HONDA CBR900RR, TRIUMPH DAYTONA).

YAMAHA YZF-R1 84.1% pass · 232k tests Compare head-to-head →
HONDA CBR900RR 83.2% pass · 166k tests Compare head-to-head →
TRIUMPH DAYTONA 83.6% pass · 113k tests Compare head-to-head →
HONDA CBR1100XX 87.1% pass · 105k tests Compare head-to-head →

Rivals share this bike's type and sit within ±30% of its engine capacity, ≥ 5,000 tests. Card colour = better/worse first-time pass rate than the DAYTONA 955I SS.

Compare with any bike

rival not listed above? pick any model to see it head-to-head with the Daytona 955I SS

More TRIUMPH models

other TRIUMPH bikes ranked by MOT pass rate
TRIUMPH BONNEVILLE 89.0% pass · 195k tests
TRIUMPH TIGER 89.6% pass · 161k tests
TRIUMPH SPRINT 85.6% pass · 133k tests
TRIUMPH DAYTONA 83.6% pass · 113k tests
TRIUMPH SPEED TRIPLE 85.6% pass · 74.6k tests
TRIUMPH THUNDERBIRD 87.8% pass · 56.3k tests

See all TRIUMPH models →

Pass rate by registration year

how each model-year cohort fares · registration year from first use date

Highest pass rate: 2002 (94.0%). Lowest: 2003 (83.2%). Every Daytona 955I SS year compared →

81%89%96%2002: 94.0% pass (50 tests)2003: 83.2% pass (101 tests)2004: 89.0% pass (154 tests)2005: 89.2% pass (120 tests)2006: 87.7% pass (284 tests)2007: 91.1% pass (90 tests)200220052007

First-time pass rate by the year each bike was first registered (cohorts with ≥ 50 tests). Older cohorts are survivors: the worst examples have already left the road, which tends to lift the earliest years.

TRIUMPH DAYTONA 955I SS FAQ

answers computed from the data above · terms in the glossary

Is the TRIUMPH DAYTONA 955I SS reliable?

The TRIUMPH DAYTONA 955I SS is more reliable than average for its class: 88.3% of its 802 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #1505 of 5428 models.

What does a DAYTONA 955I SS fail its MOT on most?

brakes: 32% of all defects recorded against failed DAYTONA 955I SS tests.

What is the best year of DAYTONA 955I SS to buy used?

By first-time pass rate, 2002-registered examples do best (94.0%) and 2003 worst (83.2%). Condition and history still trump the year.

How many miles will a DAYTONA 955I SS last?

The median DAYTONA 955I SS shows 14,557 miles at test, and examples around 40k miles still pass 86.1% of the time, so mileage alone rarely decides the result.

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