2008 Lexus IS350

The 2008 Lexus IS350 is a popular luxury sport sedan known for its blend of performance, reliability, and refinement. The IS350 comes equipped with a 3.5-liter 2GR-FSE V6 engine producing 306 horsepower and 277 lb-ft of torque. Other engine options for the 2008 IS include a 2.5-liter V6 (IS250). All IS350 models came standard with a 6-speed automatic transmission. Owners typically praise the IS350 for its smooth and powerful engine, comfortable ride, and luxurious interior. Common complaints include the small rear seats, some issues with the infotainment system, and relatively high fuel consumption compared to competitors.

Engine

3.5L 2GR-FSE V6

• Carbon Buildup on Intake Valves
  • Description/Symptoms: Direct injection engines are prone to carbon buildup on the intake valves since there is no fuel washing the valves. This can cause rough idling, misfires, reduced power, and poor fuel economy.
  • Solution: Professional cleaning of the intake valves, such as walnut blasting or chemical cleaning.
  • Estimated Cost to Fix: $500 - $1000+
• Oil Leaks from Valve Cover Gaskets
  • Description/Symptoms: Oil leaks around the valve covers, leading to a burning smell and potential oil loss.
  • Solution: Replace the valve cover gaskets.
  • Estimated Cost to Fix: $200 - $500+

Transmission

A760E 6-Speed Automatic

• Torque Converter Issues
  • Description/Symptoms: Shuddering or vibrations at low speeds, especially when the torque converter locks up. Can worsen over time.
  • Solution: Replacing the torque converter. A transmission flush may provide temporary relief but usually does not permanently resolve the issue.
  • Estimated Cost to Fix: $1,500 - $3,000+
• Valve Body Issues
  • Description/Symptoms: Harsh or erratic shifting, delayed engagement, or failure to shift into certain gears.
  • Solution: Replacing or rebuilding the valve body. In some cases, a complete transmission rebuild may be necessary.
  • Estimated Cost to Fix: $800 - $2,500+

Suspension

• Lower Control Arm Bushing Failure
  • Description/Symptoms: Clunking noises from the front suspension, especially when going over bumps. The steering may also feel loose or wander.
  • Solution: Replacing the worn lower control arm bushings. Some owners opt to replace the entire control arm assembly.
  • Estimated Cost to Fix: $300 - $800+ per side
• Wheel Bearing Failure
  • Description/Symptoms: A humming or grinding noise that increases with vehicle speed. Noise may change during turns.
  • Solution: Replacing the affected wheel bearing(s).
  • Estimated Cost to Fix: $300 - $600+ per wheel

Electrical

• Navigation Screen/Infotainment System Failure
  • Description/Symptoms: The navigation screen may flicker, freeze, or completely fail. The infotainment system may become unresponsive.
  • Solution: Replacement of the navigation unit. Some owners have found success with aftermarket repair services.
  • Estimated Cost to Fix: $300 - $1,500+
• Oxygen Sensor Failure
  • Description/Symptoms: Check engine light illuminated, poor fuel economy, rough idling, or misfires.
  • Solution: Replacing the faulty oxygen sensor(s).
  • Estimated Cost to Fix: $200 - $500+

Exterior

• HID Headlight Ballast Failure
  • Description/Symptoms: Headlight flickering or not turning on at all.
  • Solution: Replacing the headlight ballast.
  • Estimated Cost to Fix: $300 - $800+

Interior

• Dashboard Cracking
  • Description/Symptoms: Cracks developing on the dashboard, particularly in warmer climates.
  • Solution: Replacement of the dashboard (expensive) or installation of a dashboard cover.
  • Estimated Cost to Fix: $50 - $2,000+ (depending on the solution)

Recalls:

• None Found

Summary

The 2008 Lexus IS350 is a generally reliable vehicle, but owners should be aware of the common issues listed above. Carbon buildup and suspension issues are fairly common and can lead to drivability problems if left unaddressed. Electrical issues with the navigation system can also be a source of frustration. Repair costs vary depending on the issue, but some repairs can be expensive, especially those involving the transmission or dashboard replacement. Overall, performing regular maintenance and addressing problems promptly can help ensure the long-term reliability of the IS350.