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2007 LEXUS IS 350

3.5L V6•RWD•AUTOMATIC•gas
5-Year Cost of Ownership
$26,218 maintenance + known platform issues
~$5,244/yr · 440¢/mile equivalent · $5,159 maintenance + $3,859 expected platform issues
Common Problems & Known Issues

The 2007 IS 350 with the 2GR-FSE direct-injection V6 is a solid performer, but the early direct-injection tech brings carbon buildup issues and a subset developed catastrophic engine failures due to piston ring defects—a known weak point that can cost you an engine.

Carbon Buildup on Intake Valves (Direct Injection)

Common · medium severity
Typical onset: 60,000-100,000 mi
Symptoms: rough idle, hesitation on acceleration, misfires, reduced fuel economy, check engine light for misfire codes
Fix: Walnut blasting the intake valves is the proper fix—requires intake manifold removal, 4-6 hours labor. Fuel system cleaners do nothing for direct-injection carbon.
Estimated cost: $500-800

Piston Ring / Engine Failure (2GR-FSE Defect)

Occasional · high severity
Typical onset: 80,000-150,000 mi
Symptoms: excessive oil consumption (1 quart per 1,000 mi or worse), blue smoke on startup, loss of compression, knock/rattle from bottom end, complete engine seizure in worst cases
Fix: Failed piston rings score the cylinder walls. Some owners catch it early and re-ring, but most need a complete engine rebuild or replacement. Figure 20-30 hours labor for a rebuild, or 12-18 hours for a used engine swap.
Estimated cost: $4,500-8,000

Transmission Oil Cooler Line Leaks

Common · medium severity
Typical onset: 100,000-140,000 mi
Symptoms: transmission fluid spots under car, burnt smell, low fluid level on dipstick, harsh shifts if fluid gets too low
Fix: The steel lines rust at the fittings or the cooler itself cracks. Replace the lines and cooler if compromised—2-3 hours labor. Flush the transmission if contamination occurred.
Estimated cost: $600-1,200

Transmission Mount Failure

Common · low severity
Typical onset: 80,000-120,000 mi
Symptoms: clunk on acceleration or deceleration, vibration at idle in Drive, excessive drivetrain movement felt through shifter
Fix: Rubber separates from the mount bracket. Replacement is straightforward—1.5-2 hours labor to support the transmission and swap the mount.
Estimated cost: $300-500

Starter Motor Failure

Occasional · high severity
Typical onset: 100,000-150,000 mi
Symptoms: click but no crank, intermittent no-start, grinding noise on startup, eventually total no-start condition
Fix: The starter solenoid contacts wear out or the motor itself fails. Access is tight—starter sits low behind the engine. 2-3 hours labor due to working around exhaust and subframe.
Estimated cost: $500-900

Evaporative Emissions Leaks (Fuel System)

Occasional · low severity
Symptoms: check engine light P0441 or P0456, fuel smell near filler or under rear seat, failed emissions test
Fix: Charcoal canister, vent valves, or hoses crack over time. Smoke test required to pinpoint. Labor varies widely—1-4 hours depending on component location.
Estimated cost: $200-700
Owner tips
  • Check oil consumption religiously—if it's burning more than 1 quart every 3,000 miles, budget for an engine. Compression test before purchase is smart.
  • Walnut blast the intake valves every 60,000-80,000 miles to prevent drivability issues from carbon.
  • Inspect transmission cooler lines and undercarriage for rust annually—these cars see salt and age poorly underneath.
  • Use Top Tier gasoline and quality synthetic oil (0W-20) to minimize carbon formation and ring sticking.
Great chassis and transmission, but the 2GR-FSE engine is a gamble—get a pre-purchase compression test and oil consumption check or you could inherit a $6,000 rebuild.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.
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