IsItAGoodCar
Reliability Guide

Common Problems with the
2018 Suzuki Jimny (Gen 4)

The launch year for the Gen 4 Jimny. Early models had the fuel pump impeller recall issue and the door wiring harness recall. These cars also have minimal factory undersealing, making early rust prevention essential.

What changed for 2018

  • •Launch of the Gen 4 Jimny with retro styling
  • •Introduction of 1.5-litre petrol engine
  • •Retained ladder-frame chassis and low-range transfer case

Common MOT watch-outs

  • !Fuel pump failure from defective impeller
  • !Door wiring harness breakage affecting airbag sensors
  • !Chassis corrosion from minimal factory protection
3
Known Issues
2
Serious
1
Moderate
0
Minor

The 2018 period has 2 more issues than the Suzuki Jimny (Gen 4) average across all year periods.

All Known Issues

Fuel Pump Impeller Swelling

SeriousFuel System

A recall was issued for fuel pumps with a defective impeller material that can swell over time, particularly due to ethanol content in modern fuel. This can cause the pump to stop working and the engine to stall without warning.

Estimated cost: £0 (Recall)Affects: 2018–2020

Typical symptoms

  • •Engine stalling without warning
  • •Difficulty starting
  • •Fuel pump warning light

What to inspect before you buy

  • ✓Check with a Suzuki dealer that the fuel pump recall has been completed
  • ✓Verify VIN against recall records on GOV.UK

Door Wiring Harness Wear

SeriousElectrics & Electronics

A recall was issued for door harness wiring that can break from repeated opening and closing of the door. If the wiring breaks, the side impact airbag sensor may fail to operate in an accident.

Estimated cost: £0 (Recall)Affects: 2018–2020

Typical symptoms

  • •Side airbag warning light
  • •Door window or mirror intermittently not working
  • •Interior light not triggering when door opens

What to inspect before you buy

  • ✓Check recall status with a Suzuki dealer
  • ✓Test all door-operated electrical functions

Chassis Corrosion (Lack of Protection)

ModerateBodywork & Rust

The factory underseal is minimal, leading to early surface rust on the ladder frame.

Estimated cost: £300–£600 (Undersealing)Affects: 2018–2021

Typical symptoms

  • •Orange surface rust on the frame
  • •Corrosion on bolt heads

What to inspect before you buy

  • ✓Look under the car at the main frame rails

Buying Tips for the 2018 Suzuki Jimny (Gen 4)

  • ✓Verify the fuel pump recall was completed
  • ✓Check the door wiring harness recall status
  • ✓Apply additional undersealing immediately if buying
2019 Suzuki Jimny (Gen 4)

Browse 2018 Suzuki Jimny (Gen 4) in our Directory

View MOT history, registration data, and reliability scores for 2018 Suzuki Jimny (Gen 4) vehicles.

View 2018 Directory

Other Suzuki Jimny (Gen 4) Year Periods

20182019202020212022–20232024

Looking at a specific 2018 Suzuki Jimny (Gen 4)?

Enter the registration number to check its full MOT history, outstanding finance, write-off status, and more.

Free Vehicle Check