Jazz GK5

The Honda Jazz GK5 (known as the Fit in many markets) represents the third generation of Honda's acclaimed B-segment hatchback, introduced in 2013. While often overlooked as merely a practical city car, the GK5 has quietly developed a devoted following among grassroots motorsport enthusiasts who appreciate its nimble handling dynamics, excellent power-to-weight ratio in its class, and exceptional aftermarket support.

At the heart of the GK5 is Honda's L15A7 i-VTEC engine—a 1.5-liter SOHC inline-four producing 130 horsepower and 114 lb-ft of torque. While these figures may seem modest on paper, the engine's character reveals itself above 4,800 RPM where the i-VTEC system comes alive, delivering the spirited high-revving performance that Honda engines are renowned for. Weighing in at just 2,434 lbs, the Jazz achieves a respectable 0-60 mph time of approximately 9.1 seconds when equipped with the five-speed manual transmission—more than adequate for spirited driving and track day applications.

The GK5's motorsport credentials extend far beyond casual track days. The platform has been featured in organized racing series, including the GK5 Challenge Series held on the Shanghai F1 circuit as part of China GT Cup events. In endurance racing applications, well-prepared GK5s regularly achieve lap times in the 1:16-1:17 range on various circuits, demonstrating genuine performance potential when properly set up. This competitive capability, combined with Honda's legendary reliability, makes the Jazz an ideal entry point for amateur racers and track day enthusiasts operating on limited budgets.

The aftermarket has responded enthusiastically to the GK5's track potential. Companies like JRZ Suspension offer RS ONE single-adjustable damper systems specifically valved for the Jazz platform, providing the chassis control necessary for serious track work while maintaining street usability. ACUITY Instruments produces a comprehensive range of performance upgrades targeting suspension geometry, drivetrain components, and cockpit ergonomics. For those seeking more power, forced induction kits like the ANROT turbocharger system for the L15B engine can dramatically transform the car's performance envelope, though many track-focused builds remain naturally aspirated to maintain reliability and predictable power delivery.

Common modifications for track-prepared GK5s include upgraded suspension using custom-damped KYB struts paired with Swift springs, aggressive camber settings for improved turn-in response, and brake upgrades featuring Endless endurance pads with Spoon braided lines and high-performance fluid. Wheel and tire setups typically center around 15-inch wheels with 195/50 or 205/50 tires, with full slicks employed in competitive applications. Notably, the stock cooling system proves remarkably robust even in demanding conditions, with properly maintained examples completing 160-lap endurance stints in hot weather without issue.

The Jazz GK5's appeal in motorsport stems from several factors beyond raw performance numbers. Its compact dimensions—99.6-inch wheelbase, 159.5 inches overall length—make it incredibly nimble on technical circuits where agility trumps straight-line speed. The front-wheel-drive layout provides predictable, accessible handling characteristics that help developing drivers build confidence and car control skills. Most importantly, the platform's affordability both in acquisition and operation democratizes motorsport participation, allowing enthusiasts to compete without the financial burden associated with more exotic machinery.

While the Honda Jazz may never challenge dedicated sports cars in outright pace, its combination of practicality, affordability, tunability, and pure driving enjoyment has carved out a unique niche in the amateur racing landscape. For drivers seeking a reliable, cost-effective platform that can serve dual duty as daily transport and weekend track warrior, the GK5 Jazz continues to prove that motorsport accessibility doesn't require compromising on Honda's core values of engineering excellence and driver engagement.