Suzuki

Suzuki Gz125 (1999)

429 real MOT outcomes analysed • 75.8% first-time pass rate

1999 Suzuki Gz125

CarHunch analysed 429 real MOT records for the 1999 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 Mileage Distribution Still on the Road MOT Averages Colour Breakdown Compare Models

Moderate sample. 429 vehicles on record. Figures are indicative — the specific vehicle's history matters more than these averages.

The 1999 Suzuki GZ125 passes its MOT first time in 75.8% of cases, which is notably below the UK average of 80% — a reliable warning sign for a bike now 25 years old. More concerning, 28% of these machines have recorded a dangerous defect at some point, well above an acceptable threshold and a significant buyer red flag.

At a median mileage of 13,434 miles for a quarter-century-old commuter bike, these aren't high-mileage bargains, suggesting owners either ride cautiously or the bikes have lived hard lives relative to their age. With an average of 2.42 failures and 6.9 advisories per test, you should budget for regular maintenance and have any candidate thoroughly inspected for brake, suspension, and electrical gremlins before handing over cash.

The 1999 Suzuki Gz125 has a decent first-time pass rate (75.8%), 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
75.8%
UK average ~80%
Around average
Dangerous (ever)
28%
At least once in MOT history
Check this vehicle
Avg failures / car
2.42
Over 8.9 tests on record
High
Typical mileage
13k
Middle half: 8k–19k
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 6.9 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 429 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 429 vehicles — figures show how many had each issue flagged at least once in their MOT history.

Brake wear 55.9%
Front Brake pad(s) close to minimum limit · Front Brake pad(s) less than 1.5 mm thick · Front Roller brake test indicates a binding brake · …
Ask the seller when brakes were last serviced. If they don't know, factor in the cost.
Tyre wear 42.1%
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.
Lighting 41.3%
Drive chain slightly loose · Rear Drive chain sprocket slightly worn · Front position lamp does not illuminate immediately when switched on · …
Usually cheap to fix. Worth confirming all lights work before collecting.
Other issues 32.7%
Drive chain worn but not considered excessive · Drive chain sprocket carrier worn but not considered excessive · Drive chain excessively loose
Suspension & steering 16.7%
Rear wheel bearings have slight free play
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 1999.

See this vehicle's full MOT history & AI hunches

Spot recurring advisories, hidden issues, and how it compares to 429 Suzuki Gz125 cars.

UK

Before you buy a 1999 Suzuki Gz125

Based on MOT data from 429 vehicles — here's what to check.

  • 📋 Check the full MOT history. 28% 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 ClickMechanic
  • 📄 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 carVertical Get 20% off via CarHunch

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%
95
Yellow 1.9%
74
Purple 0.5%
18
White 0.2%
8
Grey 0.2%
8
Orange 0.2%
6

Mileage Distribution

Most 1999 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.

13,434
typical
8,480
low mileage
19,475
high mileage

Half of all 1999 Suzuki Gz125 vehicles fall between 8,480 and 19,475 miles.

Is the mileage you're seeing normal?
Under 8,480 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.
8,480–19,475 miles — normal for age. This is where most 1999 Suzuki Gz125s sit.
Over 26,291 miles — higher than typical. Not necessarily a problem, but check service history and look out for advisory build-up on tyres and brakes.

1999 Suzuki Gz125 — Still on the Road

Numbers are thinning — 24% of 1999 Suzuki Gz125s are still active.

Numbers are declining — 40 vehicles still getting MOTs in 2025 (24% of peak).

169 40 2014 2025

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

8.9
Avg MOT tests per vehicle
2.42
Avg failures per vehicle
6.9
Avg advisories per vehicle
Other model years — Suzuki Gz125: All Gz125 years → Which year to buy? →
1998 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010

Or browse all models: Suzuki →

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Compare with another model

See how the 1999 Suzuki Gz125 stacks up against a rival.

Watch for defects — worth knowing