2018 Toyota 4Runner

The 2018 Toyota 4Runner is a body-on-frame SUV known for its ruggedness, off-road capability, and reliability. The sole engine option for the 2018 4Runner is a 4.0L V6 producing 270 horsepower and 278 lb-ft of torque, paired with a 5-speed automatic transmission. Owners generally appreciate the 4Runner’s dependability and off-road prowess, but some dislike its outdated technology, fuel economy, and handling compared to more modern SUVs.

Engine

4.0L V6

• Valve Cover Gasket Leak
  • Description/Symptoms: Oil leaking from the valve cover onto the exhaust manifold, causing a burning smell and potential fire hazard. Oil may be visible around the valve cover.
  • Solution: Replacement of the valve cover gasket.
  • Estimated Cost to Fix: $200 - $400+
  • Recalls: None Found
• Water Pump Failure
  • Description/Symptoms: Coolant leaks from the water pump area, overheating, and potential engine damage. Squealing noises can also be present.
  • Solution: Replacement of the water pump.
  • Estimated Cost to Fix: $400 - $800+
  • Recalls: None Found

Transmission

5-Speed Automatic

• Harsh Shifting/Torque Converter Issues
  • Description/Symptoms: Rough or jerky shifting between gears, especially noticeable during acceleration or deceleration. Potential torque converter shudder.
  • Solution: Transmission flush, software update, or replacement of the torque converter in severe cases.
  • Estimated Cost to Fix: $150 (flush), $300 (software update), $1500 - $3000+ (torque converter)
  • Recalls: None Found

Suspension

• Front Suspension Clunking Noise
  • Description/Symptoms: Clunking or rattling noise coming from the front suspension, particularly when going over bumps. Often related to worn sway bar bushings or end links.
  • Solution: Replacement of the sway bar bushings and/or end links.
  • Estimated Cost to Fix: $100 - $300+
  • Recalls: None Found

Electrical

• Entune Infotainment System Issues
  • Description/Symptoms: Freezing, slow response times, Bluetooth connectivity problems, and general unreliability of the Entune system.
  • Solution: Software updates (if available), replacement of the head unit (aftermarket options often preferred).
  • Estimated Cost to Fix: $0 (update if available), $300 - $1000+ (head unit replacement)
  • Recalls: None Found
• Alternator Failure
  • Description/Symptoms: Battery not charging, dimming headlights, warning lights on the dashboard, and eventual complete electrical failure.
  • Solution: Replacement of the alternator.
  • Estimated Cost to Fix: $400 - $800+
  • Recalls: None Found

Exterior

• Rust on Frame (Specifically in Salt Belt States)
  • Description/Symptoms: Rust developing on the frame, particularly in areas exposed to road salt.
  • Solution: Rust removal and prevention treatments, frame coating. In severe cases, frame repair or replacement may be necessary (very costly).
  • Estimated Cost to Fix: $100 - $1000+ (depending on severity)
  • Recalls: None Found

Interior

• Driver or Passenger seat issues with motor failure
  • Description/Symptoms: Failure of the power seat motor resulting in an inability to move the seats back and forth or adjust the seat height
  • Solution: Replacement of the seat motor
  • Estimated Cost to Fix: $300-$700+
  • Recalls: None Found

Summary

The 2018 Toyota 4Runner, while generally reliable, does have some common issues. The most prevalent concern is the valve cover gasket leak. Other reported issues include suspension noises, Entune system glitches, and potential rust issues depending on the vehicle’s location. While the engine and transmission are typically reliable, maintenance items such as water pumps and harsh shifting should be kept in mind. The severity of these issues ranges from minor inconveniences to potentially costly repairs, making it wise to have a pre-purchase inspection performed.