Used Infiniti G37 V36 (2008-2013): Buyer's Guide

More than a third of every NHTSA complaint filed against the Infiniti G37 involves the airbag system. Not crashes. Not the engine. Airbags, specifically a passenger-seat occupancy sensor that decides whether the front passenger airbag arms at all. It shows up in the complaint data for all six model years, 2008 through 2013, and Infiniti's fix, when one existed, was never as clean as some used-car guides make it sound.

The G37, built on the V36 platform, replaced the G35 coupe for 2008 and the G35 sedan for 2009. It competed against the BMW 3-Series and Lexus IS as Infiniti's sport-luxury coupe and sedan, one step below the M. It ran through 2013 before the Q60 and Q50 naming scheme took over. One engine powers every version of it: the 3.7-liter VQ37VHR V6. That simplicity is part of the appeal for a used buyer. It's also why the handful of real defects in this generation matter so much. There's no alternate powertrain to shop around them, only a hard cutoff year that fixes most of them.

This Generation at a Glance

The G37 coupe launched for 2008 as a direct replacement for the G35 coupe: RWD only, with a 5-speed automatic or a 6-speed manual on Sport trim. For 2009, Infiniti brought the sedan into the G37 name (it had been badged G35), added a G37x all-wheel-drive variant using the ATTESA E-TS system, replaced the coupe's 5-speed automatic with a new 7-speed automatic, and launched the G37 Convertible with a 3-piece retractable hardtop, Infiniti's first drop-top since 1992.

2011 brought the IPL (Infiniti Performance Line), a coupe-only flagship with a reworked engine tune, stiffer springs, and bigger brakes. 2012 is the year to know for used buyers: Infiniti changed the VQ37VHR's internal oil gallery gasket from a failure-prone paper material to metal, and redesigned the electronic steering column lock that had jammed on 2009-2010 cars. 2013 was the final model year before the lineup moved to the Q60 coupe and Q50 sedan.

All configurations require premium gasoline. See the full Infiniti G37 market data for pricing and inventory, or check individual years: 2008, 2009, 2010, 2011, 2012, 2013.

Powertrain and Trim Breakdown

The G37 only ever had one engine family, but it had two distinct personalities depending on when the specific car left the factory. Everything below organizes around that split, plus the manual transmission's separate, year-independent weak point.

VQ37VHR 3.7L V6 (2008-2011): The Paper Gasket Years

None of what follows stops owners from loving these cars. Cars.com reviews repeatedly single out the VQ37VHR's throttle response and steering feel, described as weighty and connected to the road in a segment that's mostly moved away from that character since. Forum posts documenting engines past 400,000 miles show up regularly on myg37.com. The defects below are real, but they're not universal, and a well-maintained early car is not automatically a bad buy.

Every G37 built before the 2012 running changes uses a VQ37VHR with a paper oil gallery gasket sealing the timing cover. Owners on myg37.com describe the failure as a slow, easy-to-miss oil pressure drop rather than a sudden stall: idle oil pressure should hold above roughly 14 psi and climb past 44 psi at 2,000 rpm, and a gasket starting to fail shows up as pressure that won't hold those numbers. There's no consistent mileage trigger. Some cars run 150,000 miles without issue; others need the timing cover pulled at 60,000. When it does fail, budget $800 to $1,200 in parts for a DIY repair or $2,000 to $4,000 at a shop, since the job means pulling the timing cover and replacing both gasket plates. Forum sentiment on how common this actually is varies; some threads call it rare, others treat it as the single defining risk of buying pre-2012.

The same era carries a passenger-seat airbag occupancy sensor that can fail and disable the front passenger airbag, triggering a dash warning light. This defect has formal recall history at the very start of the generation: NHTSA campaign 08V521000 covered 2008 G37 Coupes for an occupant classification system varistor that could interrupt the signal to the airbag control unit, so confirm that campaign is closed on any 2008 car. Secondary buying guides describe the sensor failure as a near-certainty on 2010-2011 cars with $5,000 to $7,000 repair quotes, but the underlying NHTSA complaint data for 2011 shows only one filed complaint in that specific category, thinner evidence than the alarm suggests. It's a real, documented, expensive failure. It's just not the epidemic some guides frame it as.

Dashboard cracking and a sticky, melting texture near the defroster vents shows up most in myg37.com threads about 2008-2010 cars, with owners attributing it to the interior supplier's adhesive breaking down under heat. Replacement runs around $2,000. No confirmed fix year exists for this one; treat any pre-2012 dashboard as a coin flip and inspect it in person rather than assuming a cutoff protects you.

The electronic steering column lock (ESCL) is a 2009-2010 problem specifically. Revision A through D modules can jam, cutting all electrical power and stranding the car in place. Repair runs $1,200 to $1,700. Nissan-badged cars using the same part got a 6-year, unlimited-mile warranty extension from Nissan; Infiniti never extended the same coverage to G37 owners, so an out-of-warranty ESCL failure on a G37 is a bill you're paying yourself.

Two more issues show up specifically in this era's threads. The rear differential uses a silicone-filled bushing that can rupture as early as 20,000 to 30,000 miles. Infiniti doesn't sell it as a standalone part, so a rupture means replacing the entire rear cross member, a job myg37.com owners peg around $1,300. And the plastic heater hose connector at the passenger-side firewall gets brittle on 2008-2010 cars, cracking and leaking coolant; a typical hose replacement runs $375 to $439.

VQ37VHR 3.7L V6 (2012-2013): The Fix Lands

Infiniti switched the timing cover gasket to metal for the 2012 model year, and every source consulted, forum threads and competing buying guides alike, agrees this ended the gallery gasket problem. The ESCL was redesigned the same year, and the jamming failure mode disappears from later threads entirely. The airbag sensor story is murkier: a documented 2012 case on nicoclub.com describes the identical failure at under 50,000 miles, three months past the 4-year warranty, with a $6,185.91 dealer quote. That's one data point against a much larger pre-2012 pattern, enough to say the fix mostly worked without calling it airtight.

2012 also carries one of the generation's two confirmed recalls (the other being the 2008 airbag sensor campaign above): NHTSA campaign 11V538000, covering G37 Coupes built between July 2 and August 29, 2011, which are titled as 2012 models. A programming error set the power window's auto-reverse threshold too high, so a trapped body part could sustain a pinch injury before the window reversed. Dealers replaced the switch for free starting December 2011. If you're looking at an early-production 2012 coupe, check the VIN against this campaign before buying.

2013, the final model year, has the lowest raw NHTSA complaint count in the generation, tied with 2012 at 63 total complaints but spread across nearly half again as many listings, which means a meaningfully lower complaint rate per car actually on the road.

IPL (2011-2013): The 348-HP Flagship

The Infiniti Performance Line coupe uses the same VQ37VHR block with a recalibrated ECU, freer-flowing dual exhaust, and a redline raised to 7,400 rpm, producing 348 hp against the standard car's 330. It also gets springs roughly 20% stiffer up front and 10% stiffer in the rear, quicker steering, a viscous limited-slip differential, and larger opposed-piston Brembo brakes: 14-inch front rotors with 4-piston calipers, 13.8-inch rear with 2-piston calipers.

It inherits every issue tied to its build year: paper gasket and ESCL risk on 2011 cars, the 2012-and-later fixes on the rest. The IPL-specific consideration is value, not mechanics. IPL owners do praise the extra bite from the limited-slip differential and the bigger brakes under repeated hard driving, but owner and reviewer accounts converge on the same verdict: it doesn't feel dramatically different from a well-kept Sport 6MT on the street. The premium mostly buys exclusivity, unique wheels and bumpers, and the Brembo package rather than a transformed driving experience.

Manual Transmission (All Years): The Clutch Slave Cylinder

Every Sport 6MT and IPL manual car uses a clutch slave cylinder (CSC) that fails independent of model year or engine era. Failure mileage runs anywhere from 20,000 to 60,000 miles in forum reports, with at least one documented warranty replacement at 92,200 miles. Symptoms build gradually: a soft or inconsistent clutch pedal that eventually won't disengage the clutch at all. An OEM slave cylinder alone costs around $700; a full clutch job paired with an upgraded aftermarket CSC runs $2,000 to $3,000. The failure is common enough that CSC-delete kits, which relocate the slave cylinder outside the bellhousing where heat can't build up the same way, are a mature, community-vetted fix rather than a workaround of last resort.

Owners who choose the manual consistently point to it as one of the last naturally aspirated, rear-wheel-drive V6 coupes sold with a proper manual gearbox before the segment moved to turbo fours and dual-clutch boxes. That's a real reason to accept the CSC's known weakness, not a reason to avoid manual G37s outright.

Sport-trim cars with the factory Brembo brake package carry their own separate issue: front rotors warping as early as 11,000 miles and cracking by 20,000, according to owner reports on g35driver.com. Check rotor thickness and look for visible cracking on any Sport-trim car regardless of total mileage.

Trim-Specific Notes

Journey is the base trim and, somewhat counterintuitively, the one enthusiast buying guides recommend for reliability. It's the least likely to have been driven hard or modified, since it doesn't attract performance-focused buyers the way Sport and IPL do, and Sport's extra hardware doesn't need to survive years of enthusiastic use to still be worth the premium.

Sport and Sport 6MT add the hardware that actually changes how the car drives: a sport-tuned suspension, a quicker steering ratio, bigger Brembo brakes, and a viscous limited-slip differential. Sport 6MT pairs that hardware with the only manual gearbox offered alongside the full Sport package, at the cost of the CSC exposure covered above.

Sport Appearance Edition is a trap worth knowing about before you shop. It was offered specifically on the AWD (x) sedan and looks like a Sport car from the outside, with 18-inch wheels, sport bumpers, and sport seats, but it skips the actual performance hardware: no sport suspension, no quick-ratio steering, no upgraded brakes. If handling is the reason you want a G37, confirm the listing is true Sport equipment and not the Appearance package wearing the same badges.

G37x (AWD) uses Infiniti's ATTESA E-TS system, sending up to half of engine torque forward under slip. It's available on both Journey and Sport trims, coupe and sedan. No AWD-specific mechanical failure beyond what's already documented for the RWD car turned up in research; the tradeoff is added weight and a small MPG penalty rather than added risk.

Limited Edition is a cosmetic and interior package, Monaco Red or Graphite interior trim depending on the year, with no mechanical changes worth paying extra for.

Convertible-specific: the retractable hardtop's actuator mechanism uses plastic gears that wear out over time, producing "trunk open" dash errors or a top that stalls mid-cycle. Full mechanism replacement runs around $1,600 at a dealer. Cycle the top completely, roof up to roof down and back, before agreeing to buy any G37 Convertible.

Which Model Years to Target Within This Gen

The complaint data tells a consistent story. 2009 logged 167 NHTSA complaints, the most of any year in this generation, driven largely by a spike in airbag-related filings (72 of the 167) plus an electrical-power-loss cluster tied to sunroof drains flooding the body control module behind the passenger firewall. 2012 and 2013 both settled to 63 total complaints, but 2013's count is spread across 116 listings versus 2012's 80, which means the newest cars carry measurably fewer complaints per car actually sold.

For practical buying: 2012 is the earliest year that gets both the gasket fix and the ESCL redesign, provided you confirm the power window recall was completed on an early-build car. 2013 is the safer, more thoroughly sorted choice if the few thousand dollars a 2012 typically costs less isn't the deciding factor.

Pre-Purchase Inspection Checklist

Engine, all years:

• Start the car cold and watch the oil pressure gauge climb. It should hold above roughly 14 psi at idle and 44 psi at 2,000 rpm once warm. Fluctuation or a slow climb points to gallery gasket wear on pre-2012 cars.
• Ask for maintenance records showing 5,000-mile, or more frequent, oil changes. The paper-gasket era rewards short intervals; neglected oil changes accelerate the failure.

Manual transmission (Sport 6MT, IPL manual, any year):

• Push the clutch pedal by hand before starting the car. A spongy or inconsistent pedal points to CSC wear.
• Ask directly whether the slave cylinder has ever been replaced. A documented CSC replacement on a car past 60,000 miles is a good sign; an original part at that mileage is a pending failure.

Electrical and airbag, 2008-2011:

• Check for a passenger airbag warning light on the dash with the passenger seat occupied. If it's lit, the occupant sensor has already failed.
• On 2009-2010 cars specifically, try a cold start after the car has sat for several hours. A steering wheel that won't turn is the ESCL jamming.
• Ask whether the sunroof drains have ever been cleared. A clogged drain is a cheap fix; a flooded body control module from a long-neglected clog is not.

Sport-trim brakes, any year:

• Check front rotor thickness and look for visible cracking regardless of mileage. Warping has been reported as early as 11,000 miles on the factory Brembo package.

Convertible only:

• Cycle the top fully, roof up to roof down and back, and listen for hesitation or a stall mid-cycle.

Run the VIN through our recall lookup tool to confirm the 2012 power window campaign was completed.

Running Costs

All configurations run on premium gasoline. EPA data puts annual fuel cost between $3,700 and $4,300 depending on transmission and body style, with manuals and the convertible sitting at the higher end. RepairPal puts the G37's average annual repair cost at about $540, giving it a 4.0 out of 5.0 reliability score, 8th out of 31 vehicles in its class. That figure assumes a car without the gallery gasket, ESCL, or airbag sensor issues outstanding; budget several hundred dollars a year in risk on top of it for any pre-2012 car until you've confirmed those three systems are sound. The timing cover gasket repair, if needed, is the single largest expense a G37 owner is likely to face outside of collision damage. The car's mature aftermarket, including CSC-delete kits and upgraded timing cover gaskets, means parts and community-vetted fixes for every issue in this guide are easy to find, unlike on some lower-volume luxury coupes of the same era.

FAQ

Is the Infiniti G37 V36 reliable? Yes, with a caveat. RepairPal rates it 4.0 out of 5.0 for reliability with roughly $540 in average annual repair costs. The real risk sits in three specific pre-2012 parts: the timing cover gasket, the ESCL, and the airbag occupancy sensor. A well-documented 2012 or 2013 car with those systems confirmed sound is a genuinely solid used luxury coupe.

What year Infiniti G37 should I avoid? No year is a hard avoid, but 2009 carries the generation's highest NHTSA complaint count at 167, driven by an airbag sensor spike and an electrical failure cluster tied to sunroof drain clogs flooding the body control module. Between comparable 2009-2011 cars, prioritize documented maintenance history over model year alone.

How many miles will a G37 last? The VQ37VHR routinely reaches 150,000 to 200,000 miles with regular oil changes, and forum posts document examples past 400,000 miles. The limiting factor on high-mileage cars is usually the timing cover gasket on pre-2012 engines or deferred maintenance elsewhere, not the core engine block itself.

Is the G37 IPL worth the premium over a Sport 6MT? Not usually, based on owner and reviewer consensus. The IPL's extra 18 horsepower and stiffer suspension don't transform the driving experience compared to a well-kept Sport 6MT, so the premium mostly buys exclusivity, unique wheels, and the bigger Brembo package rather than a meaningfully different car to drive.

Does the Infiniti G37 have transmission problems? The 7-speed automatic itself is not a common failure point; a 2009-2012 technical service bulletin (ITB12-027) addresses harsh downshifts and hesitation with an ECM/TCM software reprogram, not a hardware fix. Manual-transmission cars carry a separate, unrelated issue: a clutch slave cylinder that commonly fails between 20,000 and 60,000 miles.

Bottom Line

A 2013 G37 with documented oil-change history and a clean CSC, if it's a manual, is the safest buy in this generation: every fix has landed, and it carries the lowest complaint rate per car on the road. A 2012 gets the same fixes for less money if you confirm the power window recall was completed. Whatever year you land on, run the VIN through a recall check first. CarScout members can track price drops on specific G37 trims and years at usecarscout.com.

Data sourced from NHTSA recalls and complaints database, EPA fuel economy data, Infiniti press materials, and real owner experiences from myg37.com, g35driver.com, and nicoclub.com forum communities. See the full Infiniti G37 market data for pricing and inventory.