2018 Chevrolet Corvette

The 2018 Chevrolet Corvette is a two-door sports car available as a coupe or convertible. It’s known for its powerful engine, sharp handling, and relatively affordable price point compared to other high-performance cars. Many owners praise its performance capabilities and aggressive styling, while some criticisms include the quality of some interior materials and the stiffness of the ride, especially on models without the Magnetic Ride Control suspension. Engine options for the 2018 Corvette include the standard 6.2L LT1 V8 producing 455 horsepower and 460 lb-ft of torque, the 6.2L LT1 V8 with performance exhaust producing 460 horsepower and 465 lb-ft of torque, and the supercharged 6.2L LT4 V8 in the Z06 producing 650 horsepower and 650 lb-ft of torque. Transmission options include a 7-speed manual and an 8-speed automatic.

Engine

6.2L LT1 V8

• Active Fuel Management (AFM) Lifter Failure
  • Description/Symptoms: The Active Fuel Management system shuts down cylinders to improve fuel economy. Lifter failure can occur, leading to misfires, rough running, and potential engine damage. A ticking or knocking sound from the engine bay is a common symptom.
  • Solution: Replacement of the failed lifters, often requiring removal of the cylinder heads. In severe cases, camshaft replacement may also be necessary.
  • Estimated Cost to Fix: $2,000 - $5,000+
  • Recalls: None Found

6.2L LT4 V8

• Supercharger Intercooler Brick Cracking/Coolant Leakage
  • Description/Symptoms: Cracking of the supercharger intercooler bricks leads to coolant leaking into the engine. This can cause a loss of power, misfires, and potential engine damage. White smoke from the exhaust may also be observed.
  • Solution: Replacement of the supercharger intercooler brick(s). Some owners also replace the supercharger itself as a preventative measure.
  • Estimated Cost to Fix: $3,000 - $6,000+
  • Recalls: None Found

Transmission

8-Speed Automatic (8L90)

• Harsh Shifting/Hesitation
  • Description/Symptoms: The 8L90 transmission is known for experiencing harsh shifts, particularly between 1st and 2nd gear, and hesitation when accelerating. This can be more pronounced when the transmission is cold.
  • Solution: A triple flush with Mobil 1 LV ATF HP transmission fluid as per TSB 18-NA-355, or valve body replacement may be required. Some owners have also had success with a transmission tune or replacement.
  • Estimated Cost to Fix: $500 - $3,000+
  • Recalls: None Found

Suspension

• Magnetic Ride Control (MRC) Damper Failure (If Equipped)
  • Description/Symptoms: Premature failure of the MRC dampers, leading to reduced ride quality, excessive bouncing, and potential handling issues. Fluid leaks may be visible on the dampers.
  • Solution: Replacement of the failed MRC damper(s). Replacement of all four dampers may be recommended for optimal performance.
  • Estimated Cost to Fix: $1,500 - $4,000+ (depending on the number of dampers replaced)
  • Recalls: None Found

Electrical

• Battery Drain Issues
  • Description/Symptoms: The Corvette can experience parasitic battery drain, leading to a dead battery, especially if the vehicle is not driven frequently.
  • Solution: Diagnosing the source of the parasitic draw and addressing the faulty component or circuit. This may involve checking for aftermarket accessories, faulty modules, or wiring issues. Some owners use battery tenders when the vehicle is stored.
  • Estimated Cost to Fix: $100 - $500+ (depending on the complexity of the issue)
  • Recalls: None Found
• Infotainment System Glitches
  • Description/Symptoms: The infotainment system can experience glitches, such as freezing, slow response times, and Bluetooth connectivity issues.
  • Solution: Software updates, resetting the system, or replacing the infotainment unit.
  • Estimated Cost to Fix: $0 (Software Update) - $1,000+ (Replacement)
  • Recalls: None Found

Exterior

• Convertible Top Issues (Convertible Models Only)
  • Description/Symptoms: Convertible tops can experience issues with operation, such as slow opening/closing, getting stuck, or leaking.
  • Solution: Diagnosing and repairing the top’s hydraulic system, sensors, or latches. Replacing worn or damaged components.
  • Estimated Cost to Fix: $200 - $2,000+ (depending on the severity of the issue)
  • Recalls: None Found

Interior

• Seat Cooling Fan Failure
  • Description/Symptoms: Failure of the cooling fans inside the seat, leading to reduced cooling performance.
  • Solution: Replacement of the seat cooling fan.
  • Estimated Cost to Fix: $300 - $600+
  • Recalls: None Found

Summary

The 2018 Chevrolet Corvette, while offering impressive performance, is prone to certain issues. Engine problems, particularly with the AFM lifters and supercharger intercooler, can be costly to repair. The 8-speed automatic transmission is also known for harsh shifting. Electrical issues and convertible top problems can add to the ownership cost. Owners should be aware of these potential issues and factor them into their purchase decision. The severity of these issues ranges from minor inconveniences to major mechanical failures, with repair costs varying accordingly.