The Infiniti G35 and G37 remain popular used luxury performance cars because they combine rear-wheel-drive-based handling, strong V6 engines and prices that are often lower than comparable European models. They are closely related, but they are not simply the same car with different badges. The G37 brought a larger engine, a newer automatic transmission, updated styling and more available technology, while the G35 can offer a lower purchase price and a more straightforward ownership experience.
Choosing between them should depend on the condition of the individual vehicle, not only the model name. A well-maintained G35 with complete records is usually a better purchase than a neglected G37 with questionable modifications. This comparison explains the most important differences so buyers can decide which platform better matches their budget and goals.
Engine and Model Differences
Infiniti sold the G35 in sedan and coupe forms with versions of the 3.5-liter VQ35 V6. According to Infiniti’s legacy specifications, output ranged from approximately 260 to 306 horsepower depending on the year, body style and engine version. Earlier cars used the VQ35DE, while the redesigned 2007-2008 G35 sedan received the higher-revving VQ35HR.
The G37 used the 3.7-liter VQ37VHR V6. Infiniti lists 330 horsepower for the coupe, 328 horsepower for the sedan and 325 horsepower for the convertible. The G37 was available with a six-speed manual or seven-speed automatic, while the G35 generally used a six-speed manual or five-speed automatic. Both generations were primarily rear-wheel drive, although select sedans and coupes were offered with all-wheel drive.
Performance and Driving Experience
The G37 is the quicker and more powerful choice in factory form. Its larger engine has more top-end power, and the seven-speed automatic keeps the engine in a useful part of the rev range. Drivers who want the strongest stock acceleration or plan to keep modifications limited will usually prefer the G37.
The G35 can still feel lively, especially in manual-transmission form. Earlier cars have a more mechanical and less insulated character that some enthusiasts prefer. The 2007-2008 G35 sedan is especially interesting because it combines the second-generation chassis with the VQ35HR engine. Neither vehicle is a lightweight sports car, but both offer responsive steering, balanced handling and a more traditional rear-wheel-drive feel than many modern luxury sedans.
Reliability and Age-Related Concerns
Both models can be reliable when maintained, but age is now a major factor. Even the newest G37 examples are more than a decade old, and many G35s are approaching or exceeding twenty years. Rubber hoses, suspension bushings, engine mounts, weather seals, wheel bearings and electrical connectors can deteriorate regardless of mileage.
On a G35, inspect for oil leaks, oil consumption, cooling-system condition, worn suspension parts and previous accident repairs. On a G37, buyers should also research oil-pressure and gallery-gasket concerns, coolant leaks around aging hose connections and the condition of the seven-speed automatic. These issues are not guaranteed failures. They are simply areas that deserve additional attention during a professional pre-purchase inspection.
Interior, Technology and Daily Comfort
The G37 generally provides the more modern cabin. Depending on trim and packages, it may include a newer navigation system, improved audio options, a more contemporary center stack and additional convenience features. The G37 sedan also works well as a practical daily driver because it provides four doors, usable rear seating and available all-wheel drive.
The G35 cabin is simpler and can feel dated, but simplicity can also reduce the number of features a buyer must test or repair. Navigation screens, seat controls, Bose audio equipment, keyless-entry functions and climate-control operation should be tested on either model. Technology upgrades such as modern head units, Bluetooth interfaces or CarPlay systems may improve usability, but installation quality matters. Poorly installed aftermarket electronics can create battery drains, rattles or intermittent faults.
Maintenance and Running Costs
Routine maintenance costs are broadly similar because both cars use naturally aspirated V6 engines and conventional automatic or manual transmissions. Oil changes, filters and basic inspections are manageable, but larger brakes, performance tires and suspension components can increase ownership costs compared with an economy car.
The purchase price of a G35 is often lower, but an older car may require more immediate catch-up maintenance. A lower price should leave room in the budget for tires, hoses, fluids, brakes, motor mounts and suspension repairs. The G37 may cost more to purchase and insure, yet a clean example with stronger maintenance history may be less expensive during the first year of ownership.
Modification Potential and Aftermarket Support
Both platforms have strong aftermarket support. Common upgrades include wheels, tires, brake pads, sway bars, springs, coilovers, exhaust systems and intake components. The G37’s VQ37 engine has a large enthusiast following, while the G35 benefits from years of shared development with the Nissan 350Z platform.
Owners should begin with maintenance, tires and alignment before adding power or lowering the car. Aggressive exhaust systems can create substantial cabin drone, and very low suspension setups may reduce ride quality and damage tires through poor alignment. Modifications should comply with local emissions and noise laws, and buyers should be cautious with cars that have unknown tunes, cut wiring or missing emissions equipment.
Coupe, Sedan or Convertible
Body style can matter as much as the engine. The sedan offers the best passenger access and daily practicality. The coupe has a sportier shape and driving position but less useful rear seating. The G37 convertible adds an attractive retractable hardtop, but the roof mechanism increases weight, complexity and repair risk.
A convertible buyer should operate the roof through a complete cycle, inspect seals and drainage areas, listen for unusual mechanical noises and check the trunk for water. Coupe buyers should inspect long doors, window operation and seat access. Sedan buyers should verify rear-door locks, window regulators and trunk operation.
Which One Should You Buy?
Choose a G35 if the lower purchase price, simpler technology and more old-school feel are priorities. The later VQ35HR sedan is a strong compromise for buyers who want a newer chassis without moving to the G37. Choose a G37 if stronger factory performance, a seven-speed automatic, newer styling and additional technology matter more.
The best answer is still the vehicle with the better history. Look for consistent oil changes, matching tires, clean fluid, straight body panels and minimal questionable modifications. A cold start, diagnostic scan and independent inspection are far more useful than choosing a car only because one generation has a better reputation online.
Final Thoughts
The G35 offers affordability and character, while the G37 offers more power and refinement. Neither is automatically cheap to own simply because the purchase price has fallen. Budget for age-related maintenance and buy the cleanest example you can verify.
For an enthusiast who values performance and a more modern cabin, the G37 is usually the better all-around choice. For a buyer who wants a lower-cost project or appreciates the original Infiniti G formula, a carefully maintained G35 can still be highly rewarding.