Should I check the MOT history before buying a 2003 Suzuki Gz125?

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 2003 Suzuki Gz125?

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 2003 Suzuki Gz125?

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.

How many 2003 Suzuki Gz125 vehicles have had dangerous defects recorded?

31% of these vehicles have had a dangerous defect recorded. Search the registration on CarHunch — the full MOT history will show exactly what was flagged and whether it was resolved.

Is the 2003 Suzuki Gz125 reliable?

Based on MOT data from 594 vehicles, the 2003 Suzuki Gz125 has a first-time MOT pass rate of 75.5%, indicating generally reliable for its class. Always check the full MOT history of any specific vehicle before buying.

What are common problems with the 2003 Suzuki Gz125?

The most frequently recorded MOT issues on the 2003 Suzuki Gz125 are: Front Brake pad(s) close to minimum limit (76.4% of vehicles), Drive chain slightly loose (63.8% of vehicles), Front Brake pad(s) less than 1.5 mm thick (37.2% 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 2003 Suzuki Gz125?

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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Suzuki Gz125 (2003)

594 real MOT outcomes analysed • 75.5% first-time pass rate

2003 Suzuki Gz125

CarHunch analysed 594 real MOT records for the 2003 Suzuki Gz125. 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 Pass Rate by Fuel Mileage Distribution Still on the Road MOT Averages Colour Breakdown Compare Models

The 2003 Suzuki GZ125 passes its MOT at 75.5%, which is notably below the UK average of 80%, and nearly a third of these bikes (31%) have recorded dangerous defects—a significant concern for buyers prioritising safety. This isn't just minor wear; owners are dealing with an average of 2.77 failures per test, suggesting structural or mechanical problems rather than routine maintenance issues.

At just over 10,500 miles median mileage for a 21-year-old bike, these machines haven't been hammered, yet they're still failing at an elevated rate—that points to age-related deterioration and corrosion rather than abuse. With an average of 8.6 advisories per vehicle, expect to budget for multiple repairs during ownership; any GZ125 you consider should be inspected by a motorcycle mechanic who can specifically check brake lines, suspension components, and electrical systems for the rust and decay that's clearly catching these bikes out.

The 2003 Suzuki Gz125 has a decent first-time pass rate (75.5%), but a higher-than-average share of vehicles have had serious defects recorded — the individual vehicle's history matters a lot here.

⚠️ Over 1 in 5 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

75.5%

UK average ~80%

Around average

Dangerous (ever)

31%

At least once in MOT history

Check this vehicle

Avg failures / car

2.77

Over 10.5 tests on record

High

Typical mileage

11k

Middle half: 7k–16k

For context

🔧 Average reliability. Passes at roughly the UK rate — not a standout, not a problem vehicle. Individual history makes all the difference.

🔧 Expect consumable spend. An average of 8.6 advisories per vehicle tells you wear items (tyres, brakes) get flagged regularly. Budget for them — they're not surprises.

🔍 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 594 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.

Watch for defects — worth knowing

What tends to go wrong

Across 594 vehicles — figures show how many had each issue flagged at least once in their MOT history.

Brake wear 76.4%

Front Brake pad(s) close to minimum limit · Front Brake pad(s) less than 1.5 mm thick · Rear Stop lamp does not illuminate immediately a brake applies

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

Lighting 63.8%

Drive chain slightly loose · Rear Drive chain sprocket slightly worn · Headlamp aim too low · …

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

Tyre wear 37.2%

Front Tyre worn close to the legal limit · Rear Tyre worn close to the legal limit · Rear Tyre tread depth is below minimum requirements of 1.0mm

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

Other issues 35%

Drive chain worn but not considered excessive · Drive chain excessively loose · Drive chain sprocket carrier worn but not considered excessive · …

Suspension & steering 13.1%

Nearside Front shock absorber has light misting of stanchion

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 2003.

See this vehicle's full MOT history & AI hunches

Spot recurring advisories, hidden issues, and how it compares to 594 Suzuki Gz125 cars.

Before you buy a 2003 Suzuki Gz125

Based on MOT data from 594 vehicles — here's what to check.

📋 Check the full MOT history. 31% 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 (100%)	593	75.5%	2.78

Colour Breakdown

Based on 3,871 Suzuki Gz125 vehicles registered in the UK — across all years. From DVLA registration records.

Black 53.4%

2,068

Blue 22.5%

871

Red 9.5%

367

Silver 5%

192

Green 4.2%

164

Maroon 2.5%

Yellow 1.9%

Purple 0.5%

White 0.2%

Grey 0.2%

Orange 0.2%

Mileage Distribution

Most 2003 Suzuki Gz125 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.

10,524

typical

6,660

low mileage

15,626

high mileage

Half of all 2003 Suzuki Gz125 vehicles fall between 6,660 and 15,626 miles.

Is the mileage you're seeing normal?

✓ Under 6,660 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.

✓ 6,660–15,626 miles — normal for age. This is where most 2003 Suzuki Gz125s sit.

⚠ Over 21,095 miles — higher than typical. Not necessarily a problem, but check service history and look out for advisory build-up on tyres and brakes.

2003 Suzuki Gz125 — Still on the Road

Numbers are thinning — 23% of 2003 Suzuki Gz125s are still active.

Numbers are declining — 64 vehicles still getting MOTs in 2025 (23% of peak).

Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2014–2025.
* The 2020 dip reflects the government's COVID-19 MOT exemption, which allowed certificates to be extended by six months — fewer tests were conducted that year.

MOT History Averages

10.5

Avg MOT tests per vehicle

2.77

Avg failures per vehicle

8.6

Avg advisories per vehicle

Other model years — Suzuki Gz125: All Gz125 years → Which year to buy? →

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Or browse all models: Suzuki →

Compare with another model

See how the 2003 Suzuki Gz125 stacks up against a rival.

Watch for defects — worth knowing