HYUNDAI I40 Common Problems & Reliability

Based on 1,463 MOT tests from 134 vehicles analysed by VehicleScore. The figures below describe that VehicleScore sample. Recurring issues seen in VehicleScore MOT data are not a claim that every HYUNDAI I40 has the same fault.

HYUNDAI I40's have a very good reliability rating of 659/999. The score was calculated from the average of every HYUNDAI I40 that has had a registered MOT.

We calculated all of the below figures by getting the score from each vehicle make/model/year/fuel, which are each calculated a score. We then generate the average score, taking into account factors such as mileage and emissions.

Also check BHP & performance, road tax, fuel economy, and CO2 emissions for the HYUNDAI I40.

HYUNDAI I40 (example)

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Fuel Type	Year	Reliability Score	Avg Mileage	Sample Size
N/A	N/A	737/999Very good	85,251 miles	964 vehicles
N/A	N/A	709/999Very good	85,290 miles	1,945 vehicles
N/A	N/A	678/999Good	83,967 miles	2,895 vehicles
N/A	N/A	602/999Good	85,909 miles	3,489 vehicles
N/A	N/A	569/999Above average	85,959 miles	3,805 vehicles

How reliable is the HYUNDAI I40?

Based on 1,463 MOT tests from 134 vehicles analysed by VehicleScore.

Vehicles

134

MOT tests

1,463

Pass rate

78.3%

Median mileage

99,454 mi

Recurring issues seen in VehicleScore MOT data are inspection findings from this sample. They are not a statement that every HYUNDAI I40 has the same fault. The median VehicleScore in this sample is 669 out of 999.

Common HYUNDAI I40 MOT problems

These groups combine equivalent MOT comments, such as the same tyre note on different corners. Counts are comment occurrences in the sample, not a percentage of cars.

Tyre wear

VehicleScore MOT data includes 324 advisory comments and 29 failure comments in this group. Seen as both an advisory and a failure reason. These are comment occurrences, not a share of all cars.

These MOT comments record tyres that were worn, damaged, or close to the legal tread depth when the car was inspected.

What to inspect

Check the tread depth and look for uneven wear, cracking, or damage on all four tyres.

Example MOT wording: NEARSIDE FRONT TYRE WORN CLOSE TO LEGAL LIMIT/WORN ON EDGE (5.2.3 (E))

Brake pad wear

VehicleScore MOT data includes 96 advisory comments and 42 failure comments in this group. Seen as both an advisory and a failure reason. These are comment occurrences, not a share of all cars.

These MOT comments record brake pads that were worn or below the inspection limit.

What to inspect

Ask for recent pad replacement and look at the remaining pad thickness.

Example MOT wording: REAR BRAKE PAD(S) WEARING THIN (1.1.13 (A) (II))

Brake disc wear

VehicleScore MOT data includes 49 advisory comments in this group. Seen mainly as an advisory. These are comment occurrences, not a share of all cars.

These MOT comments record brake discs that were worn, scored, pitted, or corroded.

What to inspect

Look at the disc faces for deep scoring, a lip at the edge, and corrosion.

Example MOT wording: FRONT BRAKE DISC WORN, PITTED OR SCORED, BUT NOT SERIOUSLY WEAKENED (1.1.14 (A) (II))

Corrosion

VehicleScore MOT data includes 39 advisory comments in this group. Seen mainly as an advisory. These are comment occurrences, not a share of all cars.

These MOT comments record corrosion the tester could see on the body or structure. Corrosion already named on a spring, brake, or other component is counted with that component.

What to inspect

Inspect the underside, sills, and subframe for heavy corrosion, especially where an advisory mentions it.

Example MOT wording: NEARSIDE REAR BRAKE PIPE CORRODED, COVERED IN GREASE OR OTHER MATERIAL (1.1.11 (C))

Oil leak

VehicleScore MOT data includes 35 advisory comments in this group. Seen mainly as an advisory. These are comment occurrences, not a share of all cars.

These MOT comments record an oil leak noted by the tester. Shock absorber misting is counted as a damper issue, not as an engine oil leak.

What to inspect

Look under the engine for fresh oil, and check the oil level.

Example MOT wording: OIL LEAK, BUT NOT EXCESSIVE (8.4.1 (A) (I))

Track rod wear

VehicleScore MOT data includes 21 failure comments in this group. Seen mainly as a failure reason. These are comment occurrences, not a share of all cars.

These MOT comments record play or damage at a track rod or track rod end.

What to inspect

Check for play when the steering wheel is rocked and listen for a knock while turning.

Example MOT wording: OFFSIDE FRONT TRACK ROD END BALL JOINT HAS EXCESSIVE PLAY (2.1.3 (B) (I))

Headlamp faults

VehicleScore MOT data includes 15 failure comments in this group. Seen mainly as a failure reason. These are comment occurrences, not a share of all cars.

These MOT comments record a headlamp that was not working, insecure, or aimed incorrectly.

What to inspect

Switch on dipped and main beam and look for a cloudy lens or a wrong aim.

Example MOT wording: OFFSIDE FRONT HEADLAMP NOT WORKING ON DIPPED BEAM (4.1.1 (A) (II))

Engine warning lamp

VehicleScore MOT data includes 6 failure comments in this group. Seen mainly as a failure reason. These are comment occurrences, not a share of all cars.

These MOT comments record an engine warning lamp that was on, or did not work, during the inspection.

What to inspect

Switch on the ignition and confirm the lamp comes on and then goes out. Ask what was diagnosed if it stayed on.

Example MOT wording: ENGINE MIL INOPERATIVE OR INDICATES A MALFUNCTION (8.2.2.2 (G))

HYUNDAI I40 MOT reliability by year

A model year is only commented on when VehicleScore has at least 5 vehicles from that year.

Year	Vehicles	MOT tests	Pass rate	Recurring issues seen
2018	9	67	80.6%	Tyre wear, Brake pad wear
2017	15	132	84.1%	Tyre wear, Brake pad wear
2016	21	204	84.8%	Tyre wear, Brake pad wear
2015	23	237	80.6%	Tyre wear, Brake pad wear
2014	22	267	77.2%	Tyre wear, Brake pad wear
2013	18	230	71.7%	Tyre wear, Brake pad wear
2012	19	279	74.9%	Tyre wear, Brake pad wear

What to check when buying a used HYUNDAI I40

This is an inspection checklist based on MOT comments in the VehicleScore sample. It does not mean the car you are looking at has these defects.

Tyre wear. Check the tread depth and look for uneven wear, cracking, or damage on all four tyres.
Brake pad wear. Ask for recent pad replacement and look at the remaining pad thickness.
Brake disc wear. Look at the disc faces for deep scoring, a lip at the edge, and corrosion.
Corrosion. Inspect the underside, sills, and subframe for heavy corrosion, especially where an advisory mentions it.
Oil leak. Look under the engine for fresh oil, and check the oil level.
Track rod wear. Check for play when the steering wheel is rocked and listen for a knock while turning.
Headlamp faults. Switch on dipped and main beam and look for a cloudy lens or a wrong aim.
Engine warning lamp. Switch on the ignition and confirm the lamp comes on and then goes out. Ask what was diagnosed if it stayed on.

Buying a HYUNDAI I40?

Common problems tell you what can affect HYUNDAI I40s generally. VehicleScore can check the history of the actual car you're considering.

Where does this data come from?

VehicleScore analyses MOT histories from vehicles in its own dataset. Sample sizes vary by model, and a small sample is labelled as such. MOT data records roadworthiness and inspection defects. It does not capture every mechanical or electronic problem a car can have, and a comment on one test is not proof that the model has an inherent fault.

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