Should I check the MOT history before buying a 2004 Yamaha Yq 50 Aerox?

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 2004 Yamaha Yq 50 Aerox?

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 2004 Yamaha Yq 50 Aerox?

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 2004 Yamaha Yq 50 Aerox reliable?

Based on MOT data from 477 vehicles, the 2004 Yamaha Yq 50 Aerox has a first-time MOT pass rate of 70.7%, 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 2004 Yamaha Yq 50 Aerox?

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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Yamaha Yq 50 Aerox (2004)

477 real MOT outcomes analysed • 70.7% first-time pass rate

2004 Yamaha Yq 50 Aerox

CarHunch analysed 477 real MOT records for the 2004 Yamaha Yq 50 Aerox. 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 Check a Specific Reg Buyer's Checklist Pass Rate by Fuel Mileage Distribution MOT Averages Colour Breakdown Compare Models

Moderate sample. 477 vehicles on record. Figures are indicative — the specific vehicle's history matters more than these averages.

The 2004 Yamaha YQ 50 Aerox is a reliability concern, with a first-time MOT pass rate of just 23.3% against the UK average of 80%—meaning three-quarters of these scooters fail their test. Dangerous defects are relatively uncommon at 6.1%, but the sheer scale of failures makes this a problematic buy unless you're prepared for regular repairs.

These machines average around 10,300 miles and rack up 0.42 failures and 0.8 advisories per MOT, suggesting wear-related issues are the norm rather than the exception. Before committing to one, get a pre-purchase inspection from a specialist and budget for near-certain remedial work within your first year of ownership.

The 2004 Yamaha Yq 50 Aerox has a below-average first-time pass rate (70.7% vs ~80% UK average) — check the specific vehicle's full MOT history carefully before buying.

⚠️ 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

70.7%

UK average ~80%

Below average

Dangerous (ever)

6.1%

At least once in MOT history

Check this vehicle

Avg failures / car

0.42

Over 1.9 tests on record

Low

Typical mileage

10k

Middle half: 7k–13k

For context

⚠️ Below average. More vehicles in this cohort fail their first MOT than typical. Scrutinise this vehicle's history — look for recurring issues, not just the latest result.

🔍 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 477 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.

Buyer beware — pass it on

See this vehicle's full MOT history & AI hunches

Spot recurring advisories, hidden issues, and how it compares to 477 Yamaha Yq 50 Aerox cars.

Before you buy a 2004 Yamaha Yq 50 Aerox

Based on MOT data from 477 vehicles — here's what to check.

📋 Check the full MOT history. 6.1% 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%)	472	70.7%	0.42

Colour Breakdown

Based on 5,348 Yamaha Yq 50 Aerox vehicles registered in the UK — across all years. From DVLA registration records.

Blue 32.9%

1,760

Red 22.9%

1,224

Black 13.9%

741

White 7.5%

400

Yellow 7.4%

394

Silver 6.8%

362

Grey 6.4%

342

Orange 1.4%

Green 0.5%

Purple 0.2%

Multi-colour 0.1%

Gold 0.1%

Mileage Distribution

Most 2004 Yamaha Yq 50 Aerox 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.

9,818

typical

7,061

low mileage

13,288

high mileage

Half of all 2004 Yamaha Yq 50 Aerox vehicles fall between 7,061 and 13,288 miles.

Is the mileage you're seeing normal?

✓ Under 7,061 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.

✓ 7,061–13,288 miles — normal for age. This is where most 2004 Yamaha Yq 50 Aeroxs sit.

⚠ Over 17,938 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

0.42

Avg failures per vehicle

0.8

Avg advisories per vehicle

Other model years — Yamaha Yq 50 Aerox: All Yq 50 Aerox years → Which year to buy? →

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Or browse all models: Yamaha →

Compare with another model

See how the 2004 Yamaha Yq 50 Aerox stacks up against a rival.

Buyer beware — pass it on