Should I check the MOT history before buying a 2018 Triumph Bonneville?

Yes. Look for recurring advisories — slow-building issues like corrosion or brake wear patterns show up years before they become failures. A full MOT history analysis will highlight patterns that a single test result won't reveal.

What corrosion should I look for when inspecting a 2018 Triumph Bonneville?

Check brake pipes, sills, subframes, and chassis legs. Surface rust is normal at this age; structural rust is a serious problem that is expensive to fix and can fail an MOT.

How are tyres and brakes typically on a 2018 Triumph Bonneville?

Tyres and brakes are the most common advisory items on vehicles of this age. Budget for replacement if they are near the limit, and factor this into your offer price.

Is the 2018 Triumph Bonneville reliable?

Based on MOT data from 2,607 vehicles, the 2018 Triumph Bonneville has a first-time MOT pass rate of 93.7%, indicating generally reliable for its class. Always check the full MOT history of any specific vehicle before buying.

What are common problems with the 2018 Triumph Bonneville?

The most frequently recorded MOT issues on the 2018 Triumph Bonneville are: Front Tyre worn close to the legal limit (28.1% of vehicles), Exhaust noisy (27% of vehicles), COVID-19 6 MONTH EXTENSION (23.8% of vehicles). These figures are based on actual MOT test records — search a specific registration on CarHunch to see its individual history.

Do I need an HPI check when buying a 2018 Triumph Bonneville?

Yes. The MOT history will not show outstanding finance, insurance write-offs, or stolen status. An HPI check covers these areas and should be part of any used car purchase.

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Triumph Bonneville (2018)

2,607 real MOT outcomes analysed • 93.7% first-time pass rate

2018 Triumph Bonneville

CarHunch analysed 2,607 real MOT records for the 2018 Triumph Bonneville. Real test outcomes — pass rates, defect profiles, mileage data — from verified DVLA records. Updated as new MOTs are recorded.
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AI Analysis Reliability Overview Common Issues Check a Specific Reg Buyer's Checklist Mileage Distribution Still on the Road MOT Averages Colour Breakdown Compare Models

The 2018 Triumph Bonneville is unusually reliable, passing its MOT first time in 93.7% of cases—well above the UK average of 80%—and dangerous defects are rare at 6.8%. This is a genuinely dependable motorcycle that should give buyers confidence in its engineering.

Most examples have covered only around 6,400 miles on average, which is very low for a six-year-old bike and suggests many are cherished rather than ridden hard. Expect just 0.37 failures and 1.1 advisories per vehicle on average, meaning typical issues are minor; any example you're considering should pass its MOT without drama if well-maintained.

The 2018 Triumph Bonneville passes its MOT first time more often than most UK vehicles (93.7% vs ~80% average) — and when it does fail, it's usually something minor and cheap to fix.

⚠️ Around 1 in 20 of these vehicles have had a dangerous MOT failure at some point — usually tyres or brakes, and often a one-off issue rather than a persistent problem. The group stats won't tell you which one you're looking at.

First-time pass

93.7%

UK average ~80%

Better than average

Dangerous (ever)

6.8%

At least once in MOT history

Check this vehicle

Avg failures / car

0.37

Over 4.8 tests on record

Low

Typical mileage

Middle half: 3k–8k

For context

✅ Good baseline reliability. A 93.7% first-time pass rate puts this well above the UK average — it's a well-sorted vehicle in this age bracket.

🔍 The dangerous defect figure is real. Most are one-off tyre failures or brake issues — not structural problems. But it's exactly why checking the individual vehicle's history is essential, not optional.

These stats describe 2,607 vehicles as a group. The specific vehicle you're looking at could be the one good example or the one outlier. Run its registration to find out.

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What tends to go wrong

Across 2,607 vehicles — figures show how many had each issue flagged at least once in their MOT history.

Tyre wear 28.1%

Front Tyre worn close to the legal limit · Rear Tyre worn close to the legal limit

Budget for a full set — on a vehicle this age, tyres are expected consumables. An inspection will confirm how much is left.

Exhaust & emissions 27%

Exhaust noisy

Other issues 23.8%

COVID-19 6 MONTH EXTENSION · Registration plate does not conform to the specified requirements · Drive chain worn but not considered excessive

Brake wear 13.7%

Rear Brake pad(s) close to minimum limit · Front Brake pad(s) close to minimum limit · Front Brake indicates slight fluctuation of brake effort · …

Ask the seller when brakes were last serviced. If they don't know, factor in the cost.

Lighting 9.9%

Drive chain slightly loose · Rear reflector missing · Headlamp aim too high · …

Usually cheap to fix. Worth confirming all lights work before collecting.

Suspension & steering 6.1%

Steering headbearing slightly stiff or notchy

Harder to spot without a ramp — this is a good reason to book a pre-purchase inspection.

Data covers a 3-year window centred on 2018.

See this vehicle's full MOT history & AI hunches

Spot recurring advisories, hidden issues, and how it compares to 2,607 Triumph Bonneville cars.

Before you buy a 2018 Triumph Bonneville

Based on MOT data from 2,607 vehicles — here's what to check.

📋 Check the full MOT history. 6.8% of these vehicles have had a dangerous defect recorded - recurring advisories often signal problems years before they become failures.
Search the reg on CarHunch for the full MOT history, reliability stats and a free AI-powered analysis of that exact vehicle.
🔍 Brake pipes, sills and subframes are the key areas on a vehicle this age — structural rust is hard to spot without getting underneath. A mechanic will check all of this before you commit, and give you a concrete basis to negotiate on price. Inspection →
📄 Outstanding finance, insurance write-offs and clocking won't appear in the MOT records — a dedicated history check covers all of this. Our link gets you 20% off automatically. History Get 20% off via CarHunch

Colour Breakdown

Based on 30,017 Triumph Bonneville vehicles registered in the UK — across all years. From DVLA registration records.

Black 38.4%

11,529

Red 19%

5,708

Blue 12.4%

3,728

White 9.2%

2,764

Green 6.3%

1,882

Silver 4.7%

1,410

Grey 3.1%

919

Gold 2.7%

802

Orange 1.9%

557

Maroon 1%

294

Purple 0.7%

225

Multi-colour 0.7%

199

Mileage Distribution

Most 2018 Triumph Bonneville vehicles sit in the blue band. If the vehicle you're looking at is outside it, it's either unusually low or high mileage for its age.

5,237

typical

3,090

low mileage

8,220

high mileage

Half of all 2018 Triumph Bonneville vehicles fall between 3,090 and 8,220 miles.

Is the mileage you're seeing normal?

✓ Under 3,090 miles — lower than most. Could be great, or could be a vehicle that rarely moved. Check test frequency and mileage progression in the MOT history.

✓ 3,090–8,220 miles — normal for age. This is where most 2018 Triumph Bonnevilles sit.

⚠ Over 11,097 miles — higher than typical. Not necessarily a problem, but check service history and look out for advisory build-up on tyres and brakes.

2018 Triumph Bonneville — Still on the Road

Almost all 2018 Triumph Bonnevilles are still on the road.

Strong survival — 2,228 vehicles still getting MOTs in 2025, 99% of the peak.

Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2021–2025.

MOT History Averages

4.8

Avg MOT tests per vehicle

0.37

Avg failures per vehicle

1.1

Avg advisories per vehicle

Other model years — Triumph Bonneville: All Bonneville years → Which year to buy? →

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