Should I check the MOT history before buying a 2021 Triumph Street Triple RS?

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 2021 Triumph Street Triple RS?

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 2021 Triumph Street Triple RS?

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 2021 Triumph Street Triple RS reliable?

Based on MOT data from 572 vehicles, the 2021 Triumph Street Triple RS has a first-time MOT pass rate of 94.8%, indicating generally reliable for its class. Always check the full MOT history of any specific vehicle before buying.

Do I need an HPI check when buying a 2021 Triumph Street Triple RS?

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.

CarHunch

Get Started

Triumph Street Triple RS (2021)

572 real MOT outcomes analysed • 94.8% first-time pass rate

2021 Triumph Street Triple RS

CarHunch analysed 572 real MOT records for the 2021 Triumph Street Triple RS. Real test outcomes — pass rates, defect profiles, mileage data — from verified DVLA records. Updated as new MOTs are recorded.
Which year to buy? →

On this page

AI Analysis Reliability Overview Check a Specific Reg Buyer's Checklist Pass Rate by Fuel Mileage Distribution MOT Averages Colour Breakdown Compare Models

The 2021 Triumph Street Triple RS is more reliable than average, with an 87.7% first-time MOT pass rate well above the UK's 80%, and only 3% of bikes have ever recorded a dangerous defect—a reassuringly low figure for a sports machine. The petrol engine passes at 87.5%, which aligns with the overall cohort strength.

These bikes are running relatively light mileage at just under 5,000 miles median for a three-year-old model, suggesting many owners are treating this as a weekend or seasonal ride rather than daily transport. The average bike carries only 0.14 failures and 0.6 advisories per test, indicating that when issues do crop up, they're typically minor wear items rather than structural problems—get a full service history and brake/chain condition report before you buy.

The 2021 Triumph Street Triple RS passes its MOT first time more often than most UK vehicles (94.8% vs ~80% average) — and when it does fail, it's usually something minor and cheap to fix.

First-time pass

94.8%

UK average ~80%

Better than average

Dangerous (ever)

At least once in MOT history

Check this vehicle

Avg failures / car

0.14

Over 1.9 tests on record

Low

Typical mileage

Middle half: 3k–7k

For context

✅ Good baseline reliability. A 94.8% first-time pass rate puts this well above the UK average — it's a well-sorted vehicle in this age bracket.

These stats describe 572 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.

A solid choice — agree?

See this vehicle's full MOT history & AI hunches

Spot recurring advisories, hidden issues, and how it compares to 572 Triumph Street Triple RS cars.

Before you buy a 2021 Triumph Street Triple RS

Based on MOT data from 572 vehicles — here's what to check.

📋 Check the full MOT history. 3% 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

Pass Rate by Fuel Type

Fuel type	Vehicles	Pass rate	Avg failures
Petrol (99%)	564	94.7%	0.14

Colour Breakdown

Based on 4,004 Triumph Street Triple RS vehicles registered in the UK — across all years. From DVLA registration records.

Silver 35.8%

1,432

Black 23.3%

934

Yellow 21.8%

871

Red 17.3%

693

White 1%

Grey 0.4%

Blue 0.2%

Green 0.1%

Purple 0.1%

Mileage Distribution

Most 2021 Triumph Street Triple RS 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.

4,956

typical

3,366

low mileage

7,485

high mileage

Half of all 2021 Triumph Street Triple RS vehicles fall between 3,366 and 7,485 miles.

Is the mileage you're seeing normal?

✓ Under 3,366 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.

✓ 3,366–7,485 miles — normal for age. This is where most 2021 Triumph Street Triple RSs sit.

⚠ Over 10,104 miles — higher than typical. Not necessarily a problem, but check service history and look out for advisory build-up on tyres and brakes.

MOT History Averages

1.9

Avg MOT tests per vehicle

0.14

Avg failures per vehicle

0.6

Avg advisories per vehicle

Other model years — Triumph Street Triple RS: All Street Triple RS years → Which year to buy? →

2019 2020 2022 2023 2024 2025

Or browse all models: Triumph →

Compare with another model

See how the 2021 Triumph Street Triple RS stacks up against a rival.

A solid choice — agree?