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Toyota IQ Mk1 (KGJ10) (2009-2014) reliability

At a glance

Toyota IQ Mk1 (KGJ10) built around 2014: fails its MOT less often than average

Toyota IQ Mk1 (KGJ10) models built around 2014 fail their MOT less often than similar cars the same age.

Looking at a Toyota IQ Mk1 (KGJ10) right now?

Enter its number plate to see its full MOT history, risk rating and running costs.

Key figure

17% of MOT tests on Toyota IQ Mk1 (KGJ10) models built around 2014 ended in a fail (retests included), against 27% for similar cars the same age.

Most common issue

The most common MOT issue on Toyota IQ Mk1 (KGJ10) models built around 2014 involves the tyres.

Toyota IQ Mk1 (KGJ10)
excellent reliability2009-2014HatchbackPETROL

Based on 20,790 tests of IQ models registered 2009-2014.

About 1 in 40 IQ Mk1 (KGJ10) MOTs (2.4%) failed and still hadn't passed 3 days later. That's for cars built around 2014 (11 years old), all fuels combined.

Based on 1,222 tests (DVSA MOT results, 2025). A fail that passed a retest within 3 days, even the same day, isn't counted. Nor is a fail with no later MOT on record.

About 1 in 30 IQ Mk1 (KGJ10) MOTs (3.2%) found at least one dangerous defect. These are cars built around 2014 (11 years old).

Based on 1,222 tests (DVSA MOT results, 2025). Dangerous is the most serious grade an MOT gives: a direct risk to road safety.

Mk1 (KGJ10) fail rate by age

Below typicalAbove typicalHigh (28% or more)Highest fail rateUK average for cars this age
Age / builtFail rateMOT tests
10 yearsbuilt around 2015
31913.5%
11 yearsbuilt around 2014
1,22216.6%
12 yearsbuilt around 2013
2,11219.1%
13 yearsbuilt around 2012
2,94319.6%
14 yearsbuilt around 2011
3,67320.6%
15 yearsbuilt around 2010
6,49222.3%
16 yearsbuilt around 2009
4,02923.2%

Fail rate is the share of MOT tests that ended in a fail. Retests count as tests. How we count fail rates Build years are worked out from age, so they are approximate. Tests counted are 2025 MOTs. Highest fail rate at 16 years old.

How the IQ Mk1 (KGJ10) compares

At each age below, see how the IQ Mk1 (KGJ10) holds up against other cars the same age. The averages combine all fuel types.

Based on 118,814 tests across 19 Toyota models, built around 2014 (11 years old).

Below typicalAbove typicalHigh (28% or more)Highest fail rateToyota average
Age / builtFail rateMOT tests
10 yearsbuilt around 2015
31913.5%
11 yearsbuilt around 2014
1,22216.6%
12 yearsbuilt around 2013
2,11219.1%
13 yearsbuilt around 2012
2,94319.6%
14 yearsbuilt around 2011
3,67320.6%
15 yearsbuilt around 2010
6,49222.3%
16 yearsbuilt around 2009
4,02923.2%

Fail rate is the share of MOT tests that ended in a fail. Retests count as tests. How we count fail rates Build years are worked out from age, so they are approximate. Tests counted are 2025 MOTs.

What to check before viewing

The model's most common MOT issues, turned into things you can ask about or look for.

Brake pads

High priority

Ask when the pads were last replaced and check the warning-light history.

Brake discs

High priority

Ask for the date and mileage of the last disc replacement; visually check for a deep wear lip and rust pitting on each disc.

Brake pipes and hoses

High priority

Look under the car for corrosion or chafing on the rigid brake pipes near the rear axle.

Tyres

Worth checking

Check tread depth across the full width on all four; uneven wear suggests alignment or suspension issues.

Vehicle-specific check

Worth checking

Check the car’s number plate on MOT Wise to see its own MOT history and any recalls for its build years.

Other hatchbacks to compare

Other hatchbacks, with each one's figures taken at the same age as the IQ Mk1 (KGJ10).

  1. 1

    Volkswagen up!

    Same body type, tested at the same age

    Fail rate
    18.9%
    Still registered at 10 years
    96.7%

    No clear edge over the Toyota IQ Mk1 (KGJ10) on these figures.

    Some figures could not be compared for these two cars. So this comparison uses the fail rate and recalls only.

    26,287 MOT tests on cars built around 2014

  2. 2

    Audi A1

    Same body type, tested at the same age

    Fail rate
    23.5%
    Fail, no pass in 3 days
    4.4%
    Dangerous
    6.9%
    Still registered at 10 years
    95%

    No clear edge over the Toyota IQ Mk1 (KGJ10) on these figures.

    30,160 MOT tests on cars built around 2014

  3. 3

    Hyundai i10

    Same body type, tested at the same age

    Fail rate
    24.7%
    Fail, no pass in 3 days
    3.5%
    Dangerous
    5.3%
    Still registered at 10 years
    95.5%

    No clear edge over the Toyota IQ Mk1 (KGJ10) on these figures.

    29,548 MOT tests on cars built around 2014

  4. 4

    Hyundai i20

    Same body type, tested at the same age

    Fail rate
    26.6%
    Fail, no pass in 3 days
    4.7%
    Dangerous
    5.1%
    Still registered at 10 years
    94.1%

    No clear edge over the Toyota IQ Mk1 (KGJ10) on these figures.

    17,357 MOT tests on cars built around 2014

Fail rate
= the share of MOT tests that ended in a fail. Retests count as tests.
Fail, no pass in 3 days
= the share of MOT tests that failed and still hadn't passed 3 days later. A fail that passed a retest within 3 days, even the same day, isn't counted.
Dangerous
= the share of MOT tests where the tester marked a fault as dangerous. It is against the law to drive the car until it is fixed.
Still registered at 10 years
= the share of cars still registered (taxed or declared off the road) 10 years after they were first registered.

How many are still registered

Not enough registration data to show this for the Toyota IQ.

The share still registered can reflect demand, the cost of repairs, exports, write-offs and how owners use the car. It isn't proof of how long the car lasts mechanically.

Recall context

9 recalls in all

4 of the 9 IQ Mk1 (KGJ10) recalls cover cars built in these years.

  • 1 Critical
  • 3 more

Top concerns

  • Risk of fire
  • Braking efficiency could be reduced
  • Electric power steering sensor may malfunction

For the exact car, check GOV.UK's recall checker with the number plate.

How IQ Mk1 (KGJ10) cars have aged

How IQ Mk1 (KGJ10) cars have aged

How fail rates have changed as these cars got older. Each line follows cars first registered in about the same year across several years of MOT data. Not a prediction for any one car.

0%10%20%79111315Age at MOTBuilt around 2014, 7 years old at the time of MOT: 12.2% (686 tests, 2021 data)Built around 2014, 8 years old at the time of MOT: 13.9% (674 tests, 2022 data)Built around 2014, 9 years old at the time of MOT: 11.6% (637 tests, 2023 data)Built around 2014, 10 years old at the time of MOT: 15.5% (673 tests, 2024 data)Built around 2014, 11 years old at the time of MOT: 15.2% (663 tests, 2025 data)2014Built around 2013, 8 years old at the time of MOT: 13.4% (1,019 tests, 2021 data)Built around 2013, 9 years old at the time of MOT: 17.3% (1,026 tests, 2022 data)Built around 2013, 10 years old at the time of MOT: 16.6% (996 tests, 2023 data)Built around 2013, 11 years old at the time of MOT: 16.3% (1,001 tests, 2024 data)Built around 2013, 12 years old at the time of MOT: 18.8% (1,007 tests, 2025 data)2013Built around 2012, 9 years old at the time of MOT: 15.5% (1,775 tests, 2021 data)Built around 2012, 10 years old at the time of MOT: 16.0% (1,746 tests, 2022 data)Built around 2012, 11 years old at the time of MOT: 16.5% (1,740 tests, 2023 data)Built around 2012, 12 years old at the time of MOT: 20.0% (1,783 tests, 2024 data)Built around 2012, 13 years old at the time of MOT: 19.1% (1,747 tests, 2025 data)2012Built around 2011, 10 years old at the time of MOT: 16.3% (1,964 tests, 2021 data)Built around 2011, 11 years old at the time of MOT: 19.4% (1,983 tests, 2022 data)Built around 2011, 12 years old at the time of MOT: 18.8% (1,945 tests, 2023 data)Built around 2011, 13 years old at the time of MOT: 19.9% (1,890 tests, 2024 data)Built around 2011, 14 years old at the time of MOT: 20.5% (1,893 tests, 2025 data)2011Built around 2010, 11 years old at the time of MOT: 18.5% (2,990 tests, 2021 data)Built around 2010, 12 years old at the time of MOT: 19.1% (2,926 tests, 2022 data)Built around 2010, 13 years old at the time of MOT: 20.6% (2,979 tests, 2023 data)Built around 2010, 14 years old at the time of MOT: 20.8% (2,856 tests, 2024 data)Built around 2010, 15 years old at the time of MOT: 22.1% (2,833 tests, 2025 data)2010Built around 2009, 12 years old at the time of MOT: 20.7% (4,545 tests, 2021 data)Built around 2009, 13 years old at the time of MOT: 20.6% (4,364 tests, 2022 data)Built around 2009, 14 years old at the time of MOT: 20.8% (4,234 tests, 2023 data)Built around 2009, 15 years old at the time of MOT: 21.9% (4,149 tests, 2024 data)Built around 2009, 16 years old at the time of MOT: 23.2% (4,029 tests, 2025 data)2009
First registered around 2014First registered around 2013First registered around 2012First registered around 2011
Mk1 (KGJ10) variants compared
All generations of this modelEnough data

Most common issues on Toyota IQs of this age

This list covers every Toyota IQ built around 2014, whichever generation it is. We don't have a defect list for the Mk1 (KGJ10) on its own.

Most common advisories and fails

In order of the share of MOT tests that recorded each one

  1. 1
    Advisory

    Tyre slightly damaged, cracking or perishing

    14.3%
    Advisory: 270Fail: 10 (4% of the times it was found)
  2. 2
    Advisory

    Brake pads wearing thin

    11.5%
    Advisory: 160Fail: 24 (13% of the times it was found)
  3. 3
    Advisory

    Brake disc worn, pitted or scored, but not seriously weakened

    10.3%
    Advisory: 176Fail: 5 (3% of the times it was found)
  4. 4
    Advisory

    Tyre worn close to the legal limit or worn on the edge

    9.3%
    Advisory: 160Fail: 12 (7% of the times it was found)
  5. 5
    Advisory

    Brake pipe corroded or covered in grease

    6.9%
    Advisory: 98Fail: 18 (16% of the times it was found)

Based on 1,222 tests

Looking at a Toyota IQ Mk1 (KGJ10) right now?

Enter its number plate to see its full MOT history, risk rating and running costs.

Frequently asked questions

Built around 2014 (11 years old), the Toyota IQ Mk1 (KGJ10) (2009-2014) fails MOTs noticeably less often than typical for this age. This is based on 1,222 11-year-old MOT tests from DVSA data. Each retest counts as a test.

*The build year is worked out from the date a car was first used on UK roads. For most cars this matches when it was registered, but imports may differ by a few months.

Data sourced from DVSA MOT History API. From 20,790 MOT tests on Toyota IQs first registered between 2009-2014. These figures are a guide, not a guarantee.