Infiniti Q50 owners have reported 73 engine and engine cooling related problems since 1996. Table 1 shows the 7 most common engine and engine cooling problems. The number one most common problem is related to the vehicle's engine and engine cooling (61 problems). The second most common problem is related to the vehicle's engine belts and pulleys (4 problems). For details of each of the problem category, use the links in the table.
The twin turbo failure is a known issue with Infiniti. I took my vehicle to the dealership and it was diagnosed with having a passenger side turbo failure. I have 145k miles on my vehicle. It is outside of the warranty period and very expensive to repair. Read details...
Engine has rough idle while in park. Even after the following maintenance was done. Replacing spark plugs, engine software update, coolant flush, power steering flush, fuel system clean, new mass air flow sensors both sides, serpentine belt, all new gaskets on top part of engine, valve cover, Read details...
During 20 degree f, I drove my car with no issues to a retail store, parked it in a parking lot. After shopping, returned to my car & started it up, put in reverse, started backing up, then several malfunction lights lit up on the car's dash & the steering wheel locked all of a sudden. Read details...
The serpentine belt makes consistent noise in all types of weather. Already had the dealer replace it once. Noise came back and the dealer now says it could be the tensioner pulley. Read details...
While driving on a highway (i95, speed 55 mph) the engine suddenly died, was able to pull over and restart the engine, which now made a terrible mechanic noise. Could drive off to a smaller road where the engine stalled again. Read details...