IsItAGoodCar
Reliability Guide

Common Problems with the
2021 Kia Stinger

A mid-life facelift for the 2021 model year streamlined the UK range to the flagship 3.3-litre V6 GT-S exclusively, introducing refreshed exterior lighting, a 10.25-inch infotainment screen, and revised exhaust tuning.

What changed for 2021

  • •Range rationalised strictly to the 3.3-litre twin-turbo V6 GT-S, dropping 2.0 petrol and 2.2 diesel UK variants
  • •New full-width rear LED light bar, updated LED headlamps, and revised quad exhaust tailpipe finishers
  • •Cabin upgrade with upgraded 10.25-inch touchscreen infotainment system and higher-grade Nappa leather upholstery

Common MOT watch-outs

  • !Rear tyre tread depth falling below legal 1.6mm limit due to high power output on rear axle
  • !Rear exhaust hanger bush degradation allowing excess tailpipe movement
  • !Electronic parking brake actuator calibration faults
2
Known Issues
0
Serious
1
Moderate
1
Minor

All Known Issues

Brembo Brake Disc Friction Material Deposit Judder

ModerateBrakes

Flagship Stinger GT-S models are equipped with four-piston Brembo front brake calipers and vented discs. Under spirited driving followed by holding the car stationary on hot pads, uneven friction material transfer occurs across the rotor surfaces. Rather than true mechanical disc warping, this deposit creates thickness variation that induces severe vibration and steering wheel shudder during moderate-to-heavy braking from motorway speeds. Resolving the issue requires skimming the discs or replacing rotors and installing upgraded aftermarket or revised OE brake pads.

Est. Repair Cost: £350–£850
Warning Signs:

Noticeable steering wheel wobble or pulsation through the brake pedal when braking from 70 to 50 mph, High-pitched brake squeal at low urban speeds when applying light pedal pressure, Visible dark patchiness or heat spotting across the front rotor friction rings

What to Inspect:
  • Carry out several progressive braking tests from 60 mph on a clear straight road to feel for steering vibration or pedal pulse
  • Visually inspect the front Brembo discs through the alloy wheel spokes for grooving, lip wear, or pad deposit rings
  • Check service history records to see if the front discs and pads have been replaced under warranty or by a previous owner
Verified by IsItAGoodCar Research TeamUpdated

Tailgate Hatch Rattle and Rubber Bump-Stop Resonance

MinorInterior & Trim

The wide rear liftback tailgate on the Stinger is prone to flexing and rattling over uneven road surfaces. The factory rubber bump stops, latch striker plate, and plastic interior trim clips can become misaligned or settle with temperature cycles. Drivers experience an irritating chattering or creaking noise from the rear boot compartment when driving over expansion joints, speed bumps, or rough asphalt. Adjusting the rubber dampers, applying felt insulation tape, or replacing latch striker components is commonly needed to restore cabin quietness.

Est. Repair Cost: £50–£180
Warning Signs:

Persistent low-frequency rattle or plastic creak emanating from the rear luggage area on uneven roads, Tailgate requires a forceful slam to engage the primary latch securely, Rub marks or paint chafing visible on the inner boot shut apertures where bump stops contact bodywork

What to Inspect:
  • Drive over road undulations or drain covers with the radio turned off and listen for chattering from the rear hatch
  • Open the tailgate and inspect the adjustable rubber bump stops for wear, missing washers, or loose thread mountings
  • Ensure the luggage compartment load cover sits firmly in its side guide channels without rattling
Verified by IsItAGoodCar Research TeamUpdated

Buying Tips for 2021 Kia Stinger

  • Test the variable electronic suspension modes to confirm noticeable damping variation between Comfort and Sport+
  • Inspect the Nappa leather seat bolsters for scuffing or premature stitching wear from aggressive entry and exit
  • Listen for any creaks from the panoramic sunroof frame when cornering over twisted tarmac
2018–20202022–2023
Check a 2021 Kia Stinger by Registration