IsItAGoodCar

Common Problems with the
2018 Citroën C4 Cactus

We've identified 4 known issues that can affect the 2018 Citroën C4 Cactus. 1 of these are serious faults that could be expensive to repair.

4
Known Issues
1
Serious
2
Moderate
1
Minor

The 2018 period has 2 more issues than the Citroën C4 Cactus average across all year periods.

All Known Issues

1.2 PureTech "Wet Belt" Degradation

SeriousEngine

The 1.2 petrol engine is subject to wet-belt degradation. Debris can block the oil pickup, leading to vacuum pump failure and a dangerous loss of braking assistance (Recall R/2020/331).

Most affected: 1.2 PureTech petrol

Estimated cost: £600–£1,800Affects: 2014–2020Often appears around: 30,000–60,000 miles

Typical symptoms

  • •Low oil pressure warning
  • •Hard brake pedal
  • •Engine fault light

What to inspect before you buy

  • ✓Check belt condition via oil filler cap
  • ✓Verify 0W-30 oil usage
  • ✓Check recall status

SMEG Infotainment Screen Freezing

ModerateElectrics & Electronics

The central touchscreen (SMEG system) can suffer from reboots, freezing, or total failure.

Estimated cost: £200–£600Affects: 2014–2018Often appears around: Any

Typical symptoms

  • •Screen goes black randomly
  • •Bluetooth pairing fails repeatedly

What to inspect before you buy

  • ✓Test all menus (Climate, Radio, Settings)

AC Condenser Corrosion

ModerateCooling System

The air conditioning condenser is poorly protected and prone to stone chips and road salt corrosion, leading to refrigerant leaks.

Estimated cost: £250–£500Affects: 2014–2020Often appears around: 30,000–60,000 miles

Typical symptoms

  • •AC stops blowing cold air
  • •Hissing sound from dashboard
  • •Visible oily residue on the condenser behind the lower grille

What to inspect before you buy

  • ✓Inspect the condenser fins for damage or wet patches
  • ✓Verify the compressor engages when AC is turned on

Antenna Base Seal Leak

MinorBodywork & Rust

The seal on the roof antenna base can fail, allowing water to enter the cabin and drip from the interior light console.

Most affected: Models with panoramic roof or standard aerial

Estimated cost: £50–£150Affects: 2014–2020

Typical symptoms

  • •Water dripping from the front interior light
  • •Stained or damp headlining
  • •Musty smell

What to inspect before you buy

  • ✓Check the headlining around the front interior light for dampness
  • ✓Inspect the antenna base for cracks or gaps

Buying Tips for the 2018 Citroën C4 Cactus

  • ✓Check the door bottoms for rust; early models had issues with moisture getting trapped behind the Airbumps.
  • ✓Test the rear windows; they "pop out" rather than roll down, so ensure the latches are secure.
  • ✓Verify the air conditioning performance, as the system is known to be slightly weak in hot weather.
2014–2017 Citroën C4 Cactus2019–2020 Citroën C4 Cactus

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Other Citroën C4 Cactus Year Periods

2014–201720182019–2020

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