The Infiniti M37’s most frequently reported issues revolve around the transmission, oil consumption or leaks, and various electrical or infotainment glitches, especially as the car ages.
Launched for model years around 2009 through 2013, the M37 is powered by a 3.7-liter V6 (the VQ37VHR) paired with a seven-speed automatic transmission. Like many aging luxury sedans, wear on drivetrain components, seals, and electronics can surface with higher mileage. This article outlines the problems most often mentioned by owners and how they typically manifest, along with general guidance for maintenance and mitigation.
Overview of the Infiniti M37
The M37 sits in Infiniti’s mid-size luxury sedan lineup and shares many components with its contemporaries in the brand’s lineup. Known for a smooth ride and robust engine, it can still develop issues common to aging V6 luxury cars, particularly with routine wear items and electronics. Understanding what tends to fail helps owners stay ahead of costly repairs.
Common mechanical and drivetrain problems
Before listing the main mechanical concerns, note that transmission and drivetrain symptoms are widely reported, especially on higher-mileage examples. Regular servicing can help reduce the risk of failure and extend the life of these components.
- Rough or delayed shifting from the seven‑speed automatic transmission
- Transmission slipping or harsh downshifts, particularly if fluid changes are neglected
- Transmission fault codes or occasional limp-mode behavior in older units
Overall, these transmission-related symptoms tend to appear as mileage increases or when maintenance on the auto transmission has been deferred. A proactive fluid service and timely diagnostic checks can mitigate some of these issues.
Engine and oil-related problems
Before listing the items, consider that the VQ37VHR engine has generally strong reliability, but aging engines often show wear in seals, chains, and fuel/ignition components. Oil management and timing components are common stress points as the car accumulates miles.
- Oil consumption or leaks around valve-cover gaskets, leading to staining near the top of the engine
- Misfires or rough idle from ignition coils or spark plugs aging or failing
- Timing chain/tensioner wear causing rattling noises or irregular timing behavior
Addressing these engine-related concerns typically involves routine valve-cover gasket replacement when needed, coil/plug maintenance, and inspection of the timing chain/tensioner during major service intervals. Early detection can prevent more serious engine damage.
Electrical, infotainment, and interior issues
As with many late-2000s luxury cars, electronic systems can show glitches as modules age or experience weather-related wear. Infotainment components and sensors are common touchpoints for owners seeking remedy.
- Infotainment/navigation screen glitches, Bluetooth pairing problems, or audio system faults
- Warning lights or sensor faults (ABS, TPMS, or general charging system) due to aging electronics
- Interior noises or trim issues, such as rattles from panels, sunroof mechanisms, or worn door seals
Electrical and interior problems often reflect aging components and harness wear. Diagnostic checks and, where needed, component replacements can restore reliability and comfort.
Maintenance and reliability notes
Reliability can vary by model year, maintenance history, and how aggressively the car has been driven. Cars with thorough service records and timely component replacements generally perform better. Prospective buyers should request full maintenance history, review any open recalls, and consider a pre-purchase inspection focusing on the transmission, timing chain area, engine seals, and electronics.
In summary
The Infiniti M37 is capable and comfortable when well maintained, but its most common problems center on the transmission, engine oil management, and aging electrical systems. Regular maintenance—especially fluid changes for the transmission, attention to valve-cover gaskets and ignition components, and proactive checks of electrical modules—can help mitigate these issues and extend the car’s usable life.