DVSA Statistics
1998 General Motors Sierra
MOT Pass Rate & Pre-MOT Checklist
There isn't much MOT data yet for the 1998 General Motors Sierra (only 2 tests in our DVSA dataset), so these figures are a rough guide. We still highlight common failure items below so you can check before your MOT.
Pass Rate
Based on 2 DVSA anonymised MOT tests · About this data
Pass Rate
50%
Lower than average
Limited data available for this model; results may be less representative.
Top Failure Reasons
Common MOT failures for this model
Based on DVSA statistics from 2 recorded tests.
Pre-MOT Checklist for 1998 General Motors Sierra
Based on common failure points for this model, check these items before your MOT:
- 1
Check exhaust for leaks, holes, or excessive corrosion - listen for blowing
Exhaust – Common fail on this model
- 2
Ensure engine is at operating temperature before test - take a good run beforehand
Emissions – Common fail on this model
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Frequently Asked Questions
Is a 1998 General Motors Sierra likely to fail its MOT?
Based on DVSA statistics, the 1998 General Motors Sierra has a 50% MOT pass rate. This is below average, so extra pre-MOT checks are recommended.
What are the most common MOT failures on a 1998 General Motors Sierra?
The most common MOT failure reasons for a 1998 General Motors Sierra are: an induction or exhaust leak that could affect emissions levels, emissions test unable to be completed. Many of these can be checked and fixed before your test to improve your chances of passing.
How can I reduce the chance my 1998 General Motors Sierra fails its MOT?
To improve your chances of passing, check the items that commonly fail on this model: an induction or exhaust leak that could affect emissions levels, emissions test unable to be completed. Use our pre-MOT checklist above to identify potential issues before your test. Many common failures are easy DIY fixes.
How many 1998 General Motors Sierras fail their MOT?
Around 50% of 1998 General Motors Sierras fail their MOT test, meaning roughly 1 in 2 don't pass first time. The most common reasons are an induction or exhaust leak that could affect emissions levels and emissions test unable to be completed. Pre-checking these items can significantly improve your chances.
What should I check before my 1998 General Motors Sierra MOT?
Before your 1998 General Motors Sierra MOT, check these commonly-failed items: an induction or exhaust leak that could affect emissions levels, emissions test unable to be completed. Most are visual checks you can do at home – look for worn tyres, test all lights work, and check for obvious damage or leaks.
Is the 1998 General Motors Sierra reliable for MOT?
With a 50% MOT pass rate, the 1998 General Motors Sierra performs below average compared to typical vehicles. Extra attention to pre-MOT checks is recommended for this model.