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Motorcycle

Triumph 400-series

What is likely to break, when it happens, and how expensive it can be — from source-linked reports.

Reliability signal — · Insufficient data · data confidence Very Low

1 failure reports

Reliability summary

What is likely to go wrong, when it happens, and how expensive it can be — from source-linked failure reports.

Reliability signal

—

1 failure report · Insufficient data · Data confidence: Very Low

Need at least 5 failure-signal reports before showing an A–F grade.

Most common issue: Engine breakdown / loose tensioner
Typical first failure: —; Median of reports with timing
Median repair cost: $420; Reported costs only
Highest reported repair: $420; Not a guarantee

What breaks?

Failure types

Click a type in the reports section below to filter.

Engine breakdown / loose tensioner1 · 100%

When does it break?

Failure timing

Months after purchase, using reports that included timing.

No timing data yet for this model.

What does it cost?

Reported repair costs

Distribution of owner-reported repair costs — not a quote or guarantee.

Median months to failure

—

Failure reports

Median repair cost

$420

Still recommend

—

% repaired

% mfr warranty

% extended warranty

—

% support helpful

Use these reports as a risk signal, then check current listings before you buy.

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What breaks?

What breaks? · reports

Engine breakdown / loose tensioner

Timing / tensioner

$420

Source-linkedVerify source — Reddit post

Triumph 400-series bike engine broke down; service initially said warranty would cover the repair, then rejected the claim after finding the oil change was delayed by two months. The stated fault was a loose tensioner, and the centre offered only one part covered while leaving the owner with about ₹35,000 remaining cost.

UnverifiedEvidence ★★★☆☆Not under mfr warranty

View report details

Months until failure

Not stated

Repair cost

$420

Repaired

Manufacturer warranty

Extended warranty

Not stated

Support helpful

Would recommend

Not stated

AI extraction confidence

89%

Verification status

Unverified

Evidence quality

★★★☆☆ (3/5)

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