Spartan track car 400 HP Hits 62 MPH in 2.4 Seconds, Weighs Less Than a Miata

When enthusiasts talk about ultralight machines built around Honda’s high-revving performance engines, the Ariel Atom usually dominates the conversation. But there’s another, far rarer, option hiding in plain sight—the Spartan track car 400 HP from Australia. With just around 1,764 pounds to move, this machine is lighter than the current Miata and leans heavily into the purity angle of 1960s racing aesthetics.

It is more analog and less frantic than an Atom, yet just as quick over a lap thanks to its rigid chassis and featherweight build. This performance is achieved without resorting to exotic, high-maintenance V8s.

Spartan Sports Car Honda Civic Type R engine — Source: Spartan Motor Company

Here is a look at the extreme engineering that makes this track car so quick.

Performance and Powertrain

The Spartan is powered by a reliable, supercharged Honda 2.4-liter four-cylinder engine. The power-to-weight ratio is massive, leading to hypercar-level acceleration figures.

Metric	Specification	Context
Engine	Supercharged Honda 2.4-Liter I4	Built with forged internals and a Rotrex supercharger.
Output	400 HP	Generates a power-to-weight ratio of approximately 508 hp per tonne.
Weight	1,764 Pounds (800 kg)	Lighter than a Mazda Miata.
0–62 MPH (100 km/h)	2.4 Seconds	Rivals modern hypercars and beats the Ariel Atom 4.
Top Speed	174 mph (280 km/h)	Limited by the track-focused gearing and aero.
Downforce	660 Pounds at 155 mph	Generates downforce via a front splitter and multi-position rear wing.

Chassis and Technology

The Spartan’s ambition was to be affordable, lightweight, easily maintainable, and perform to the highest standards. Its engineering is a testament to this goal.

Chassis: Features a super-stiff tubular space-frame chassis wrapped in carbon-fiber bodywork that weighs less than 45 pounds.
Suspension: Uses wishbone suspension with TracTive active dampers. These self-adjust based on G-load, softening the ride over rough kerbs and stiffening instantly as the car builds G-force.
Brakes: AP Racing brakes with Wilwood calipers provide formidable stopping power.
Interior: The cabin features Tillet B6 carbon seats, six-point harnesses, and an integrated safety cell built to exceed FIA standards.

The Spartan track car 400 HP is an exciting, analog machine that offers a pure driving experience. Production is highly scarce, reportedly limited to just 300 units, ensuring its underground appeal and exclusivity remain strong.

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