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2017 Q50 Red Sport - Turbo Failure & Coolant Leak Concerns (P0299)

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Ryan M. · rep 0 · May 22, 5:09 AM · 1 replies · solved · Question

My 2017 Infiniti Q50 Red Sport with about 70,000 miles has been giving me some headaches lately. I've noticed a significant drop in power, and sometimes it feels like the turbos aren't spooling up correctly. The check engine light came on, and a scan showed P0299 (turbocharger underboost).

On top of that, I've been smelling coolant, and the reservoir level drops slowly. I'm worried about the common VR30DDTT issues like turbo failure or the dreaded coolant gallery gasket leak. Has anyone else experienced this with their 2017 Q50 3.0t?

What was the fix, and how much did it cost? I'm trying to figure out if this is something I can tackle with a trusted independent shop or if it's a dealer-only repair.

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 5:09 AM

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ClearTheCode guidance (Infiniti · Buying & ownership)

Summary: For 2017 Q50 Red Sport - Turbo Failure & Coolant Leak Concerns (P0299), work through these steps on your 2016+ vehicle:

  1. Confirm the symptom — note when it happens (cold start, highway, after fuel fill, etc.).
  2. Scan codes — save all pending/stored DTCs; don't clear until you've recorded them.
  3. Check TSBs & recalls — look up your VIN for open campaigns and known fixes.
  4. Inspect the obvious — related fuses, connectors, fluid level, and recent repairs.
  5. Test the common fix — follow model-specific service procedures; one change at a time.
  6. Escalate if needed — burning smell, no brakes, overheating, or stalling in traffic → shop visit.

Owner reported: My 2017 Infiniti Q50 Red Sport with about 70,000 miles has been giving me some headaches lately. I've noticed a significant drop in power, and sometimes it feels like the turbos aren't spooling up correctly. The check engine light came on, and a scan showed P0299 (turbocharger underboost).

On top of that, I've been smelling coolant, and the reservoir level drops slowly. I'm worried about the comm…

This is educational guidance, not a substitute for hands-on diagnosis.

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