IsItAGoodCar
Reliability Guide

Common Problems with the
2020 Tesla Model 3

We've identified 4 known issues that can affect the 2020 Tesla Model 3. None are considered critical, but they're worth knowing about before you buy.

4
Known Issues
0
Serious
1
Moderate
3
Minor

All Known Issues

Upper Control Arm Failure

ModerateSuspension & Chassis

The front upper control arms frequently develop a loud squeaking or "old bed spring" creaking noise due to water ingress into the ball joint. This is very common in the UK due to wet weather and road salt.

Est. Repair Cost: £300–£600
Warning Signs:

Loud squeaking when turning or over bumps, Knocking noise, Steering feel changes

What to Inspect:
  • Listen for creaking while stationary by turning the wheel
  • Check if the arms have been replaced with the updated part (plastic vs metal housing)
Verified by IsItAGoodCar Research Team

Rear Light Condensation

MinorElectrics & Electronics

Water ingress into the rear light clusters is common, often leading to visible condensation and eventual failure of the LED units.

Est. Repair Cost: £200–£400 (per unit)
Warning Signs:

Visible water droplets inside lights, Flickering LEDs, MOT failure for light function

What to Inspect:
  • Inspect lights after rain or a car wash
  • Look for green algae growth inside lens
  • Verify all LED segments work
Verified by IsItAGoodCar Research Team

Paint Durability & Stone Chips

MinorBodywork & Rust

The paint on Model 3 is known to be relatively soft, making it highly susceptible to stone chips and "sandblasting" on the rocker panels and sills.

Est. Repair Cost: £200–£1,000 (PPF/Respray)
Warning Signs:

Visible chips on bonnet and sills, Paint flaking near wheel arches, Dull finish on lower panels

What to Inspect:
  • Inspect the lower sills and rear wheel arches
  • Look for "sandblasting" effect behind wheels
  • Check if mud flaps or PPF are installed
Verified by IsItAGoodCar Research Team

Boot Water Ingress

MinorBodywork & Rust

Water can collect on the boot lid and run directly into the trunk when opened, or leak through the rear seals during heavy rain.

Est. Repair Cost: £100–£300
Warning Signs:

Damp carpet in boot, Water dripping from boot lid when open, Musty smell in cabin

What to Inspect:
  • Check under the boot floor for standing water
  • Inspect condition of the main boot seal
  • Check for updated "lip" seal on later models
Verified by IsItAGoodCar Research Team

Buying Tips for 2020 Tesla Model 3

  • ✓On pre-2021 models, inspect the paintwork very carefully, especially around the sills and wheel arches, as the paint is known to be thin and chip easily.
  • ✓Listen for creaks or knocks from the front suspension (particularly the upper control arms), which wear out prematurely.
  • ✓Check the condition of the vegan leather seats; they are generally durable but can bubble if exposed to certain hair products or sunscreens.
  • ✓Verify the HVAC system (heat pump on later models) operates quietly; early heat pumps could fail in extreme cold.
  • ✓Ensure the central touchscreen is fully responsive with no "ghost touches" or yellowing around the edges.
  • ✓Test the Autopilot cameras to ensure they are clean and not throwing error codes.
20192021
Check a 2020 Tesla Model 3 by Registration