Suzuki

Suzuki Gz 125 X (1999)

132 real MOT outcomes analysed • 72% first-time pass rate

1999 Suzuki Gz 125 X

CarHunch analysed 132 real MOT records for the 1999 Suzuki Gz 125 X. Real test outcomes — pass rates, defect profiles, mileage data — from verified DVLA records. Updated as new MOTs are recorded.
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The 1999 Suzuki GZ 125 X has a serious reliability problem: only 24.8% pass their MOT first time, nearly a quarter of the UK average of 80%. While dangerous defects are rare at 3%, the petrol models struggle particularly badly with just a 20.6% first-time pass rate, suggesting systemic issues rather than isolated cases.

These bikes are turning up for test at a very low mileage—median of 11,885 miles for a 25-year-old machine—which suggests many owners are either shelving them or putting them away after encountering problems. With an average of 0.46 failures and 0.9 advisories per vehicle, expect corrosion, brake wear, and fuel system issues to crop up regularly; factor in at least one full inspection and likely remedial work before trusting this model for regular riding.

We have limited data for the 1999 Suzuki Gz 125 X — treat the figures below as indicative rather than definitive.

First-time pass
72%
UK average ~80%
Below average
Dangerous (ever)
3%
At least once in MOT history
Check this vehicle
Avg failures / car
0.46
Over 2.3 tests on record
Low
Typical mileage
12k
Middle half: 8k–16k
For context

These stats describe 132 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 132 Suzuki Gz 125 X cars.

UK

Before you buy a 1999 Suzuki Gz 125 X

Based on MOT data from 132 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 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

Pass Rate by Fuel Type

Fuel type Vehicles Pass rate Avg failures
Petrol (94%) 124 70.9% 0.46

Mileage Distribution

Most 1999 Suzuki Gz 125 X 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.

11,885
typical
7,922
low mileage
15,549
high mileage

Half of all 1999 Suzuki Gz 125 X vehicles fall between 7,922 and 15,549 miles.

Is the mileage you're seeing normal?
Under 7,922 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.
7,922–15,549 miles — normal for age. This is where most 1999 Suzuki Gz 125 Xs sit.
Over 20,991 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

2.3
Avg MOT tests per vehicle
0.46
Avg failures per vehicle
0.9
Avg advisories per vehicle
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Compare with another model

See how the 1999 Suzuki Gz 125 X stacks up against a rival.

Buyer beware — pass it on