The Infiniti G37 might be the most overlooked performance sedan of the 2000s. While everyone chases overpriced BMWs and unreliable Audis, the G37 delivers 330 honest horsepower from Nissan's bulletproof VQ37VHR engine — and actually makes more power than Infiniti claimed. No German maintenance nightmares, no turbo lag, just naturally aspirated reliability that runs forever.

Quick links

• VQ37 Makes 330 Honest HP
• The VQ37 Delivers Everywhere
• What Goes Wrong
• Perfect Daily Driver
• Buying Checklist

VQ37 Makes 330 Honest HP

Infiniti actually underrated the G37's power output. The factory claimed 328 horsepower, but dyno testing consistently shows 330+ horsepower at the crank — making it one of the few cars from this era that exceeds its advertised numbers. Compare that to BMW's inflated claims or Audi's creative marketing, and the G37's honesty becomes refreshing.

The VQ37VHR uses dual-cam variable timing and produces its peak power at 7,000 RPM with a 7,500 RPM redline. This isn't some low-revving truck motor — it's a proper sports car engine that loves being wound out. If you're coming from a turbo four-cylinder, the linear power delivery and that signature VQ wail will convert you immediately.

For context on naturally aspirated power, check out our 370Z build guide — the same VQ37VHR powers both cars, making parts interchangeable and knowledge transferable.

The VQ37 Delivers Everywhere

The G37 isn't just about straight-line performance. The G37S with Sport Package came with Akebono four-piston front brakes and a viscous limited-slip differential from the factory — components that cost thousands to retrofit on other platforms. The suspension geometry is shared with the 370Z, meaning aftermarket support is massive.

Forced induction options are proven and reliable. Stillen's supercharger kit pushes 500+ wheel horsepower on stock internals, while turbo setups from companies like GTM can exceed 600 wheel horsepower with proper supporting modifications. The VQ37's forged rotating assembly handles boost better than most engines from this era.

Speaking of performance modifications, the K&N Performance Intake Kit at $516 is a popular first modification that adds sound and modest power gains. For suspension upgrades, the Function and Form Type 3 Coilovers offer excellent value for street and canyon use.

If you're considering other Japanese platforms from this era, our underrated Japanese sports cars article covers the G37's contemporaries and why it stands out.

What Goes Wrong

The G37's problems are predictable and well-documented — no mysterious German electrical gremlins or catastrophic engine failures. The most common issue is gallery gasket leaks around 100,000 miles, which cause oil seepage around the timing cover. This repair costs about $1,500 at the dealer but can be done for less at independent shops familiar with VQ engines.

The steering lock mechanism is another known failure point that can strand you. Early symptoms include hesitation when starting or clicking sounds from the steering column. The replacement part costs around $400, and there's a TSB addressing this issue. Many owners simply disable the system entirely to prevent future problems.

Manual transmission cars suffer from clutch slave cylinder (CSC) failure around 60,000 miles. The internal slave cylinder design means transmission removal for replacement, making this an $800-1,200 repair. However, aftermarket solutions like the Z1 Motorsports external CSC kit eliminate this problem permanently.

For comparison with other platforms' reliability, read our 350Z engine problems guide — the G37's VQ37 is significantly more reliable than the earlier VQ35DE.

Perfect Daily Driver

The G37 hits the sweet spot between performance and practicality that BMW promised but rarely delivered. Rear-wheel drive provides proper sports sedan dynamics, while the naturally aspirated engine eliminates turbo complexity and heat management issues. Fuel economy sits around 20 city / 27 highway — reasonable for a 330-horsepower car.

Interior quality surpasses contemporary BMWs, with soft-touch materials and controls that still function after 15 years. The seats are supportive enough for spirited driving but comfortable for long commutes. Rear seats actually fit adults, unlike most "four-door" sports cars from this era.

Parts availability is excellent thanks to shared components with the 370Z and other Nissan products. Oil changes use standard 5W-30 synthetic oil, brake pads are available at any parts store, and performance modifications don't require specialty tools or dealer programming.

For those considering air suspension, the Air Lift Performance Front Kit at $1,131 and Rear Kit at $1,088 provide excellent ride quality and adjustability.

Buying Checklist

When shopping for a G37, focus on these key inspection points. Check for oil weeping around the timing cover — early signs of gallery gasket failure that you can use for negotiating leverage. Test the steering lock system by cycling the key and listening for unusual sounds or hesitation.

On manual cars, pay attention to clutch engagement and pedal feel. A spongy or inconsistent clutch pedal often indicates CSC problems. Check service records for transmission fluid changes — the manual gearbox benefits from regular fluid changes using Nissan Matic S ATF.

Inspect the Akebono brakes on Sport Package cars for pad thickness and rotor condition. These brakes are expensive to replace but worth the cost for their performance. Look for aftermarket modifications that suggest the car was enthusiast-owned and maintained.

For wheel fitment on your G37 build, browse our selection of 19-inch wheels in 5x114.3 — the most popular size for this platform. The G37 uses the same bolt pattern as many Japanese sports cars, providing excellent wheel selection.

The G37 Advantage

The Infiniti G37 represents everything enthusiasts claim they want: honest power figures, reliable naturally aspirated engine, rear-wheel drive, manual transmission availability, and reasonable maintenance costs. While the market chases overpriced BMWs and unreliable German alternatives, the G37 delivers genuine performance without the drama.

Current market prices range from $8,000-15,000 for clean examples — a fraction of what you'd pay for an equivalent BMW 335i with twice the maintenance headaches. The G37 proves that sometimes the best performance bargain is the one nobody's talking about.

Ready to build your G37? Start with quality aftermarket wheels and explore our vehicle gallery for inspiration. The G37's combination of reliability, performance, and value makes it the smart enthusiast choice.