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Common problems by part

Kia Sedona exhaust, emissions and leaks problems

DVSA MOT tests 2022–2025 · 3,750 MOT tests · Updated

At 15 years, 3.7 in 100 MOT tests of the Kia Sedona failed on exhaust, emissions and leaks, against 5.7 for all class 4 vehicles the same age (all test years; 3,750 MOT tests) [1].

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  • Against all class 4 vehicles the same age: fails less often than all class 4 vehicles the same age (0.5–0.7×) (all test years), 137 MOT tests with a fail
  • By age: seen at 8 ages from 12 to 19 years, 21,149 MOT tests
  • Most common fail: Malfunction indicator lamp: inoperative or indicates a malfunction, 1.3 per 100 MOT tests

Figures are for the model as a whole, not for one car.

What the MOT tests show

What we know

3.7 fails per 100 MOT tests at 15 years, against 5.7 for all class 4 vehicles tested at 15 (all test years). The Kia Sedona fails less often here.

Why it matters

An exhaust, emissions and leaks fail stops the car passing until it is fixed; the most common one is rated major by DVSA.

What to check

Start the car from cold and look for smoke at the exhaust, listen for blowing joints, and look under the engine and gearbox for fresh oil or fluid drips.

Kia Sedona exhaust, emissions and leaks fails by age

Kia Sedona exhaust, emissions and leaks fails per 100 MOT tests by ageSolid line: the Kia Sedona. Dashed line: all cars the same age. The table below lists every value.024612 years: 1.3 per 100 (all cars 3.7), 1,890 MOT tests1213 years: 2.0 per 100 (all cars 4.3), 2,442 MOT tests1314 years: 2.8 per 100 (all cars 5.1), 3,495 MOT tests1415 years: 3.7 per 100 (all cars 5.7), 3,750 MOT tests1516 years: 3.8 per 100 (all cars 6.2), 3,417 MOT tests1617 years: 3.6 per 100 (all cars 6.5), 2,893 MOT tests1718 years: 3.9 per 100 (all cars 6.8), 2,062 MOT tests1819 years: 3.1 per 100 (all cars 7.0), 1,200 MOT tests19
Fails per 100 MOT tests by age, all first-use years pooled. Kia Sedona All class 4 vehicles the same age Shaded: over 18 years, survivors only.
AgeMOT testsFails per 100All class 4 vehicles the same age
121,8901.33.7
132,4422.04.3
143,4952.85.1
153,7503.75.7
163,4173.86.2
172,8933.66.5
182,0623.96.8
19*1,2003.17.0

All first-use years of the Kia Sedona pooled at each age, against all class 4 vehicles at that age over all 2022–2025 test years. * Only survivors are still tested at this age.

What fails in the exhaust, emissions and leaks at 15 years

Fails

Advisories (not fails)

Diagnose engine warning light cost

Repair figures are estimates, not quotes: how we estimate repair costs.

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  • Model risks for this year and fuel
  • What similar cars did at their next MOT
  • Repairs ahead
  • Viewing checklist

See a sample report

How to check on a test drive

Start the car from cold and look for smoke at the exhaust, listen for blowing joints, and look under the engine and gearbox for fresh oil or fluid drips.

The most common advisory here in MOT records: Engine oil leaks: leak, but not excessive.

Check one Kia Sedona, not the average

The figures here describe Kia Sedona cars as a group. These free tools answer for one car. Each line says what the tool reads.

Other Kia Sedona problems

Exhaust, emissions and leaks on rival models

Questions people ask

Does the Kia Sedona have more exhaust, emissions and leaks problems than other cars?

0.5 to 0.7 times the exhaust, emissions and leaks fail rate of all class 4 vehicles the same age at 15 years (all test years), from 3,750 MOT tests. The interval is clear of 0.8 in the same direction at 3 of the 8 ages seen (ages up to 18 with at least 100 MOT tests with a fail).

How common are Kia Sedona exhaust, emissions and leaks problems?

3.7 in 100 MOT tests at 15 years failed on exhaust, emissions and leaks, against 5.7 for all class 4 vehicles the same age (all test years; 3,750 MOT tests).

What is the most common Kia Sedona exhaust, emissions and leaks fail?

1.3 in 100 MOT tests at 15 years: Malfunction indicator lamp: inoperative or indicates a malfunction (50 MOT tests with it).

Sources

  1. Driver and Vehicle Standards Agency, Anonymised MOT tests and results, 2022 to 2025. DVSA MOT data, Open Government Licence v3.0, 21,149 MOT tests. Accessed 7 Oct 2026.
  2. Office for National Statistics, Consumer price inflation, local price quotes (car repair items). ONS price quotes, series 610236. Accessed 7 Oct 2026.

Parts: against all class 4 vehicles at the same age, all 2022–2025 test years pooled, not adjusted for mileage. Breakdowns and non-MOT faults are not in this data. How we compare