Toyota GT86 / Subaru BRZ Common Problems & Solutions

The Toyota GT86 and Subaru BRZ are known for their balance, lightweight design, and driving enjoyment. However, like any car, they have a few common problems that owners should be aware of. In this guide, we cover typical issues and practical solutions to help you maintain your GT86/BRZ for everyday driving.

1. High Oil Consumption

Problem: Some GT86/BRZ models, particularly the early ones (2012-2014), can consume more oil than expected. This is often a characteristic of the FA20 engine, especially when driven enthusiastically.

Solution:

  • Regularly check and top up the oil between services. Aim to check every 1,000 miles.
  • Use a high-quality synthetic oil (5W-30 or 0W-20) as recommended in the owner's manual.

2. Torque Dip Between 3,000-4,500 RPM

Problem: The FA20 engine has a well-known "torque dip" in the mid-range, making the car feel less responsive in that RPM range.

Solution:

  • An aftermarket unequal length header (UEL) can help smooth out the torque curve and enhance engine response.
  • A remap (e.g., EcuTek) is recommended to maximize gains after installing headers.

3. Weak OEM Clutch

Problem: The stock clutch on the GT86 may wear out faster than expected, especially if the car is driven in a spirited manner.

Solution:

  • Upgrade to a performance clutch for improved durability.
  • Consider regular clutch fluid changes to maintain optimal performance.

4. Rear Tail Light Condensation

Problem: Condensation build-up in the tail lights is a common complaint among GT86/BRZ owners.

Solution:

  • Remove the tail lights and reseal them with a high-quality silicone sealant.
  • Consider upgrading to aftermarket tail lights that offer better sealing.

5. Valve Spring Recall (2012-2013 Models)

Problem: Toyota and Subaru issued a recall for early models due to faulty valve springs that could potentially cause engine failure.

Solution:

  • Ensure the recall work has been completed. Contact your local dealer with your VIN to verify.
  • If you’re buying a used GT86/BRZ, check that the valve spring recall has been performed.

6. Crickets from the High-Pressure Fuel Pump (HPFP)

Problem: Many GT86/BRZ owners notice a "cricket" noise from the high-pressure fuel pump, particularly when using fuel with higher ethanol content.

Solution:

  • Switch to fuel with a lower ethanol content to reduce the noise.
  • An aftermarket HPFP can help resolve the issue for those who find it annoying.

7. Weak OEM Battery

Problem: The factory battery is known to be undersized, leading to starting issues, especially in cold weather or if the car isn’t driven often.

Solution:

  • Upgrade to a higher-capacity battery for improved reliability.
  • Use a battery tender if the car is parked for extended periods.

8. Interior Rattles and Creaks

Problem: Rattles and creaks from the interior panels are a common issue, particularly as the car ages.

Solution:

  • Use felt tape or foam padding to quiet down noisy panels.
  • Tighten any loose trim pieces regularly to prevent rattles.

9. Fragile OEM Radiator

Problem: The stock radiator can struggle in hot weather or during long drives, leading to higher engine temperatures.

Solution:

  • Consider replacing the radiator with an aftermarket option for better cooling.
  • Ensure proper airflow by keeping the radiator clean and free of debris.

10. Weak Suspension Bushings

Problem: The stock rubber suspension bushings can wear out quickly, leading to a less precise handling feel.

Solution:

  • Upgrade to polyurethane bushings for increased durability and improved handling.

11. Rust and Corrosion on the Undercarriage

Problem: Due to the UK's wet and salted roads during winter, rust and corrosion on the undercarriage and suspension components are common, particularly on older GT86/BRZ models.

Solution:

  • Apply underseal or rust protection coating, especially before winter.
  • Regularly wash the undercarriage, especially after driving on salted roads.
  • Inspect and treat any signs of rust early to prevent it from spreading.

12. Poor Rear Visibility in Wet Conditions

Problem: The design of the rear window and rear lights can lead to poor visibility in rain, especially on UK motorways where spray from other cars is common.

Solution:

  • Apply a hydrophobic coating to the rear window to help repel water.
  • Use a quality glass cleaner regularly to maintain clarity and reduce water spots.

13. Moisture Build-Up in Headlights

Problem: The UK’s damp climate can cause condensation in the front headlights, reducing visibility and potentially causing electrical issues.

Solution:

  • Reseal the headlights with silicone sealant.
  • Use silica gel packs inside the headlight housing to absorb moisture.
  • Upgrade to aftermarket headlights with better sealing if the problem persists.

14. Soft Paint and Stone Chips

Problem: The GT86/BRZ has relatively soft paint, making it prone to stone chips and scratches, especially on UK roads with loose gravel.

Solution:

  • Apply a paint protection film (PPF) to vulnerable areas like the front bumper, bonnet, and side mirrors.
  • Use a high-quality wax or ceramic coating for extra protection.

15. Rear Differential Noise on Tight Turns

Problem: Some GT86/BRZ models can develop a knocking or clunking noise from the rear differential when making tight turns, especially in cold weather.

Solution:

  • Change the differential oil to a high-quality fluid suitable for cold climates (e.g., Motul Gear 300).
  • Consider adding a friction modifier additive to reduce noise.

16. Failing Coil Pack or Ignition Coils

Problem: UK owners have reported issues with coil packs or ignition coils failing, particularly on earlier models. Symptoms include rough idling, misfires, and a check engine light.

Solution:

  • Replace failing ignition coils with upgraded versions that are more heat-resistant.
  • Keep a spare coil pack handy, as this issue can happen unexpectedly.

17. Alarm Issues Due to Bonnet Sensor

Problem: Many GT86/BRZ owners experience false alarms triggered by the bonnet sensor. The sensor is located on a small metal arm under the bonnet, which can get bent or misaligned, causing the alarm to go off unexpectedly, especially in wet or cold weather.

Solution:

  • Inspect the metal arm holding the bonnet sensor. If it's bent, carefully bend it back into the correct position.
  • Clean the sensor and surrounding area to ensure there’s no dirt or moisture interfering with the connection.
  • If the issue persists, consider replacing the sensor or temporarily disconnecting it (note: this may disable the bonnet alarm trigger).

18. Oil Starvation Issues

Problem: The GT86/BRZ can suffer from oil starvation during hard cornering or on uneven roads. This is due to the design of the stock oil pick-up and sump, which can struggle to maintain consistent oil pressure, especially in aggressive driving situations.

Solution:

  • Upgrade to an improved oil pick-up that is less prone to cracking and provides better oil flow.
  • Install a baffled sump to help keep the oil around the pick-up during cornering, reducing the risk of oil starvation.
  • Regularly check the oil level and top up if needed to ensure optimal lubrication.

19. Poor Grip from OEM Tyres

Problem: The GT86/BRZ originally comes with Michelin Primacy HP tyres, which prioritize low rolling resistance and fuel efficiency over grip. While this can be fun for sliding at low speeds, it often results in less-than-ideal traction, especially in wet conditions or during spirited driving.

Solution:

  • Upgrade to high-performance summer tyres like the Michelin Pilot Sport 4 or Bridgestone Potenza, which offer significantly better grip and handling.
  • If you drive year-round in the UK, consider switching to a set of all-season tyres for improved safety in wet and cold conditions.
  • Regularly check your tyre pressures and adjust them for optimal grip and comfort.

We hope this guide helps you keep your GT86/BRZ in top condition for everyday driving. For any parts or upgrades mentioned here, check out the ARG Performance shop for quality options and expert advice.

Contact form