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So, you want to buy a 2008 to 2014 G35/G37/Q40/Q60

Old 10-08-2018, 12:40 PM
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So, you want to buy a 2008 to 2014 G35/G37/Q40/Q60

The V36 chassis is pretty solid, but like all cars, it has a few week points.
  • 2008 to 2011 VQ37VHR engines (used in all models and the 370Z) has a known issue with an oil gasket that is internal to the engine. When it fails, Infiniti charges big bucks (>$1,500) to replace it. A lot of stuff has to be removed to get at it. Infiniti changed gasket material for 2012 and later engines and they don't suffer this gasket failure.
  • The (rear) differential has a silicone-filled rear bushing and it often ruptures. This does not impair operation but does cause a little extra noise and vibration. Infiniti did not design this bushing to be replaced, instead the rear cross member is to be replaced at a dealer cost of roughly $1,300. There are aftermarket urethane bushings available but it's a six-plus hour job.
  • The sunroof drains are rather prone to clogging causing flooded front passenger footwells. These can be cleared easily enough but the vast majority of owners don't learn this until they have Infiniti handle the first occurrence. These drains are rubber tubes that run down the A-pillers to a rubber fitting in the firewall. This rubber fitting can harden and fail, too, also causing wet feet.

Less common issues are
  • cam timing drives failing
  • window switches which entail replacing the window motor
  • front door window seals can leak, yet another cause of flooded footwells
  • on manual-trans models, the concentric slave cylinder is a bit fragile
  • as is common with any car with front drive shafts (G37x and G37xS), the front cv-joints wear out.
The only other common complaint is that the automatic transmission is not a willing partner if you want to drive in a sporty manner. If you just want to sleep from point A to point B, it works well. If you want ready down-shifts, buy a Sport model with paddle shifters and use manual-mode.

Convertibles have their own sets of top issues. You'll have peruse the convertible forum for their peccadillos.
  • Top seals have been known to leak a little. Windshield header and real seal between top and trunk seem to be the most common places.
  • Flipper(?)
  • There are several position switches that have to be triggered in a certain order. These may go out of adjustment.
  • Be careful of items in the trunk that can break the rear glass when the top folds.

Last edited by slartibartfast; 11-12-2018 at 07:44 PM.
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Old 10-08-2018, 02:44 PM
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Well done sir, and a nice easy link to refer to when asked which year(s) are best. Thanks!
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