IsItAGoodCar

Common Problems with the
2020 Porsche Boxster / Cayman (718)

We've identified 3 known issues that can affect the 2020 Porsche Boxster / Cayman (718). None are considered critical, but they're worth knowing about before you buy.

3
Known Issues
0
Serious
2
Moderate
1
Minor

The 2020 period has 2 more issues than the Porsche Boxster / Cayman (718) average across all year periods.

All Known Issues

Water Pump Leak

ModerateCooling System

Premature failure of the water pump or its vacuum actuator can cause coolant loss.

Most affected: All turbo models

Estimated cost: £600–£900Affects: 2016–2020Often appears around: 20k-50k miles

Typical symptoms

  • •Low coolant warning
  • •Coolant smell after driving

What to inspect before you buy

  • ✓Check coolant level and look for pink residue

Oil Separator (AOS) Failure

ModerateEngine

The air-oil separator can fail internally, causing oil consumption, blue smoke on startup, and rough idle. A common M96/M97-era issue that also affects 718 models.

Most affected: All models

Estimated cost: £300–£500Affects: 2016–2024Often appears around: 30k-60k miles

Typical symptoms

  • •Blue smoke on startup
  • •Rough idle
  • •Oil consumption
  • •Oil in intake

What to inspect before you buy

  • ✓Check for blue smoke on cold start
  • ✓Inspect intake system for oil residue

PCM Infotainment Glitches

MinorElectrics & Electronics

The PCM system on 718 models can suffer from screen freezes, Apple CarPlay disconnects, and Bluetooth connectivity issues.

Most affected: All models

Estimated cost: £0–£200 (Software update)Affects: 2016–2024Often appears around: N/A

Typical symptoms

  • •Screen freeze
  • •CarPlay disconnects
  • •Bluetooth dropouts

What to inspect before you buy

  • ✓Ensure latest software is installed
  • ✓Test wireless and wired CarPlay

Buying Tips for the 2020 Porsche Boxster / Cayman (718)

  • ✓Listen for a metallic rattle from the turbo wastegate on early 2.0 and 2.5 models.
  • ✓Check for coolant leaks near the water pump, a known weak spot on early 718s.
  • ✓Ensure PCM is updated for wireless CarPlay stability.
2016–2019 Porsche Boxster / Cayman (718)2021–2024 Porsche Boxster / Cayman (718)

Browse 2020 Porsche Boxster / Cayman (718) in our Directory

View MOT history, registration data, and reliability scores for 2020 Porsche Boxster / Cayman (718) vehicles.

View 2020 Directory

Other Porsche Boxster / Cayman (718) Year Periods

2016–201920202021–20242025

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