What year Triumph S is most reliable?

Based on MOT first-test pass rates, the 2017 Triumph S has the highest pass rate at 94.1%, out of 290 vehicles tested.

What are the most common Triumph S MOT failures?

The most common Triumph S MOT failures vary by year. Check the individual year pages for detailed defect breakdowns — links in the table above.

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Triumph S — Reliability by Year

4,270 vehicles · MOT data 2013–2017 · first-test pass rates

This page shows MOT first-test pass rates for each year the Triumph S was manufactured — click any year to explore that cohort in detail. Trying to decide which year to buy? See the full buying guide →

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Best pass rate year

2017

94.1% pass rate · 290 vehicles

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Lowest pass rate year

2013

90.2% pass rate · 653 vehicles

Year	Pass rate	Avg mileage	Vehicles
2017	94.1%	7,467 mi	290
2016	91.9%	8,149 mi	1,014
2015	91.0%	9,009 mi	1,173
2014	90.2%	9,903 mi	1,140
2013	90.2%	10,299 mi	653

Which year Triumph S is most reliable?

MOT pass rate by year of manufacture — averaged across each vehicle's lifetime of tests.

Tests range from an average of 7,467 miles (newest year) to 10,299 miles (oldest year). Older years naturally accumulate more tests at higher mileages — see the mileage-normalised breakdown →

Trying to decide which year to buy?

We've done the full analysis — which years to look for, which to avoid, and where to find the best value for reliability on a Triumph S.

See the buying guide →

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