Kia Rio MOT Pass Rate
Overall pass rate across all manufacture years, based on 997,439 real MOT test results. Failure rate: 31.3%.
Data from official DVSA MOT testing records
Kia Rio MOT Reliability Overview
The Kia Rio is one of the most widely tested vehicles in the UK, with 997,439 MOT test results recorded in our database spanning 22 manufacture years. It has an overall MOT pass rate of 68.7% and a failure rate of 31.3%, which is slightly above the UK average of approximately 37%.
Based on this data, the Kia Rio earns a "Good" reliability rating. The average Kia Rio presents for MOT with approximately 52,647 miles on the clock. Manufacture year matters: 2022 models achieve the highest pass rate at 96.4%, while 2001 models have the lowest at 46.8%. This 49.6 percentage point difference suggests notable variation in build quality or component durability across production years.
The most common MOT failure for the Kia Rio is Brakes, affecting 27.1% of all tests. Brake-related failures include worn brake pads, corroded brake discs, leaking brake lines, and faulty brake servos. These are safety-critical components — any brake deficiency will result in an MOT fail. The second most common issue is Tyres at 22.1%. Suspension rounds out the top three at 21.7%. Together, these top 3 failure categories account for a significant portion of all MOT failures for this model.
Top failures across all manufacture years combined. Individual year pages may show different top failures.
What Fails Most
Best Year to Buy
Based on MOT data, 2021 models have the highest pass rate at 92.2%.
Based on 2024 MOT test results only — the most recent data available. "Built" = year of manufacture. Cars need their first MOT at 3 years old, so the newest cars shown are from ~3 years ago.
Bar chart showing pass rate by manufacture year from 2005 to 2021
| Built | Pass Rate | Tests | Verdict |
|---|---|---|---|
| 2021 | 92.2% | 2,327 | 🏆 Best |
| 2020 | 87.1% | 2,889 | ⚠️ Fair |
| 2019 | 84.1% | 4,404 | ⚠️ Fair |
| 2018 | 83.9% | 5,831 | ⚠️ Fair |
| 2017 | 82.9% | 8,793 | ⚠️ Fair |
| 2016 | 77.9% | 10,725 | ❌ Avoid |
| 2015 | 76.5% | 13,935 | ❌ Avoid |
| 2014 | 67.4% | 13,535 | ❌ Avoid |
| 2013 | 62.3% | 12,076 | ❌ Avoid |
| 2012 | 59.8% | 10,946 | ❌ Avoid |
| 2010 | 55.0% | 6,695 | ❌ Avoid |
| 2011 | 54.9% | 8,072 | ❌ Avoid |
| 2009 | 53.9% | 5,735 | ❌ Avoid |
| 2005 | 51.1% | 607 | ❌ Avoid |
| 2008 | 49.5% | 2,354 | ❌ Avoid |
📈 How Each Vintage Ages
Tracking how each manufacture year's MOT pass rate changes as the car ages. Showing 20 vintages — click year chips to highlight.
Multi-line chart showing how different Kia Rio vintages degrade over time, from age 2 to 22 years.
Only vintages with 100+ tests in at least 3 different test years are shown. Fleet average is the UK-wide pass rate for all cars at each age.
📉 How Age Affects Reliability
MOT failure rate by vehicle age for the Kia Rio. The dashed red line marks when the manufacturer warranty typically expires (7 years).
Line chart showing MOT failure rate by vehicle age from 3 to 20 years, with warranty expiry marked at 7 years.
💡 What does the warranty cliff mean?
The Kia Rio sees a significant jump in MOT failures after the warranty period. Failure rate increases by 65% once warranty cover ends. Budget for increased maintenance costs from year 8 onwards. Peak failure occurs at age 20 (52.5% fail rate).
Note: pass rates may improve for very old vehicles due to survivorship bias — only well-maintained cars remain on the road.
* High Fail Rate badge indicates an MOT pass rate below 65% (failure rate above 35%).
What Fails on This Car?
Click a category to see specific failure items.
View as table
| Rank | Failure Category | Rate (%) | Count |
|---|---|---|---|
| 1 | Brakes | 29.4% | 293,025 |
| 2 | Suspension | 23.8% | 237,253 |
| 3 | Tyres | 23.2% | 231,414 |
| 4 | Lamps, Reflectors And Electrical Equipment | 20.7% | 206,220 |
| 5 | Visibility | 5.4% | 53,521 |
| 6 | Driver's View Of The Road | 5.2% | 52,037 |
| 7 | Steering | 5.2% | 52,025 |
| 8 | Body, Chassis, Structure | 2.4% | 24,306 |
| 9 | Non-component Advisories | 2.2% | 22,159 |
| 10 | Noise, Emissions And Leaks | 2.1% | 21,117 |
| 11 | Exhaust, Fuel And Emissions | 1.3% | 12,997 |
| 12 | Identification Of The Vehicle | 0.9% | 9,101 |
| 13 | Registration Plates And Vin | 0.8% | 8,059 |
| 14 | Seat Belts And Supplementary Restraint Systems | 0.7% | 6,681 |
Failures per 10,000 Miles
avg. 52,647 miFor every 10,000 miles driven, this shows what percentage of MOT tests fail for each category. This accounts for how far cars are actually driven, not just raw pass/fail counts.
View as table
| Category | Rate / 10K mi | Raw % | Count |
|---|---|---|---|
| Brakes | 5.58 | 29.4% | 293,025 |
| Suspension | 4.52 | 23.8% | 237,253 |
| Tyres | 4.41 | 23.2% | 231,414 |
| Lamps & Electrical | 3.93 | 20.7% | 206,220 |
| Visibility | 2.01 | 10.6% | 105,558 |
| Steering | 0.99 | 5.2% | 52,025 |
| Body & Structure | 0.46 | 2.4% | 24,306 |
| Non-component advisories | 0.42 | 2.2% | 22,159 |
| Noise, emissions and leaks | 0.40 | 2.1% | 21,117 |
| Emissions & Exhaust | 0.25 | 1.3% | 12,997 |
| Identification of the vehicle | 0.17 | 0.9% | 9,101 |
| Registration Plates and VIN | 0.15 | 0.8% | 8,059 |
| Seat Belts | 0.13 | 0.7% | 6,681 |
🚗 Similar Cars to Consider
Mileage at MOT
The average Kia Rio has 52,647 miles when tested for MOT.
📊 Mileage-Adjusted Failure Rate
How often this car fails MOT relative to how much it's driven — a fairer comparison than raw pass rate.
The Kia Rio has a mileage-adjusted failure rate of 5.95% per 10,000 miles driven. The average across all makes is 5.38%, so this model is worse than average.
About Kia Rio MOT Data
The Kia Rio is one of the most widely tested vehicles in the UK, with 997,439 MOT test results recorded in our database spanning 22 manufacture years. It has an overall MOT pass rate of 68.7% and a failure rate of 31.3%, which is slightly above the UK average of approximately 37%.
For Kia Rio owners, these results suggest a reliable vehicle that generally passes its MOT without major issues. Focus your pre-MOT checks on brakes and tyres for the best chance of a first-time pass. Use our detailed year-by-year breakdown and failure analysis below to understand how your specific Rio is likely to perform.
Brakes — 27.1% of failures
Brakes issues account for 27.1% of MOT failures on the Kia Rio. Brake-related failures include worn brake pads, corroded brake discs, leaking brake lines, and faulty brake servos. These are safety-critical components — any brake deficiency will result in an MOT fail. Typical repair costs: £150–400. Pre-MOT check: Listen for squealing or grinding noises. Check brake pedal feel — if it feels spongy or goes to the floor, have the system inspected immediately. Look at brake pad thickness through the wheel spokes (minimum 3mm).
Tyres — 22.1% of failures
Tyres issues account for 22.1% of MOT failures on the Kia Rio. Tyre failures include tread depth below the legal minimum of 1.6mm, cuts, bulges, exposed cords, and incorrect tyre pressure. Tyres are one of the most common and easiest-to-prevent MOT failures. Typical repair costs: £50–200 per tyre. Pre-MOT check: Check tread depth with a 20p coin — if the outer band is visible, the tyre is too worn. Look for bulges, cuts, or embedded objects. Ensure all tyres match the recommended size and load rating.
Suspension — 21.7% of failures
Suspension issues account for 21.7% of MOT failures on the Kia Rio. Suspension failures typically involve worn bushes, leaking shock absorbers, broken coil springs, and damaged suspension arms. These affect ride quality, tyre wear, and road holding. Typical repair costs: £200–500. Pre-MOT check: Look for uneven tyre wear, listen for clunking over bumps, and check if the car pulls to one side. A bouncy ride suggests worn shock absorbers. Visually inspect coil springs for cracks.
Compare Kia Rio
Frequently Asked Questions
What is the MOT pass rate for the Kia Rio?
Based on 997,439 MOT tests in our database, the Kia Rio has an overall pass rate of 68.7% (31.3% fail rate).
What are the most common MOT failures on a Kia Rio?
The top 3 reasons a Kia Rio fails its MOT are: 1. Brakes (27.1%), 2. Tyres (22.1%), 3. Suspension (21.7%). Check these areas before booking your MOT.
Is the Kia Rio reliable?
With a 31.3% MOT failure rate, the Rio is more reliable than average compared to the UK average of ~40%.
What should I check before an MOT on my Kia Rio?
Based on failure data, focus on: Brakes (27.1%); Tyres (22.1%); Suspension (21.7%). These are the areas most likely to cause a fail. Also check all lights, tyres (minimum 1.6mm tread), and windscreen condition — these are quick wins that apply to all cars.
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.