The Polaris Slingshot 2.4, producing 173 horsepower, marked a distinctive arrival in the American roadster segment. Introduced in 2014 and continuing through the 2019 model year, the Slingshot wasn’t a conventional automobile but an open-air, three-wheeled vehicle engineered to deliver a thrilling and unconventional driving experience. It quickly resonated with enthusiasts seeking a head-turning alternative to traditional sports cars. The 2.4-liter variant formed the core of the Slingshot lineup during its production run, striking a balance between performance and affordability. It occupied a unique space, appealing to those wanting something beyond the typical sports car experience, but without the complexity or cost of high-end exotic vehicles.
Technical Specifications
| Brand | Polaris |
| Model | Slingshot |
| Type (Engine) | 2.4 (173 Hp) |
| Start of production | 2014 |
| End of production | 2019 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Roadster |
| Seats | 2 |
| Fuel Type | Petrol (Gasoline) |
| Weight-to-power ratio | 4.6 kg/Hp, 218.2 Hp/tonne |
| Weight-to-torque ratio | 3.5 kg/Nm, 283.7 Nm/tonne |
| Power | 173 Hp @ 6200 rpm |
| Power per litre | 72.6 Hp/l |
| Torque | 225 Nm @ 4700 rpm (165.95 lb.-ft. @ 4700 rpm) |
| Maximum engine speed | 7200 rpm |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | LE9 |
| Engine displacement | 2384 cm3 (145.48 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 88 mm (3.46 in.) |
| Piston Stroke | 98 mm (3.86 in.) |
| Compression ratio | 10.4:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | DOHC, VVT |
| Engine oil capacity | 4.25 l (4.49 US qt | 3.74 UK qt) |
| Coolant | 3.8 l (4.02 US qt | 3.34 UK qt) |
| Kerb Weight | 793 kg (1748.27 lbs.) |
| Max. weight | 997 kg (2198.01 lbs.) |
| Max load | 204 kg (449.74 lbs.) |
| Fuel tank capacity | 37.1 l (9.8 US gal | 8.16 UK gal) |
| Length | 3800 mm (149.61 in.) |
| Width | 1960 mm (77.17 in.) |
| Height | 1318 mm (51.89 in.) |
| Wheelbase | 2667 mm (105 in.) |
| Front track | 1755 mm (69.09 in.) |
| Ride height (ground clearance) | 127 mm (5 in.) |
| Drivetrain Architecture | Rear wheel drive |
| Drive wheel | Rear wheel drive |
| Number of gears and type of gearbox | 5 gears, manual transmission |
| Front suspension | Double wishbone |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Front wheel tires | 205/50 R17; 225/45 R18 |
| Rear wheel tires | 265/35 R18; 255/35 R20; 305/30 R20 |
| Front wheel rims | 7J x 17; 7.5J x 18 |
| Rear wheel rims | 9.5J x 18; 9J x 20; 11J x 20 |
Powertrain & Engine Architecture
The Polaris Slingshot 2.4’s powertrain centers around the General Motors-sourced 2.4-liter LE9 inline-four cylinder engine. This engine, also utilized in vehicles such as the Chevrolet Equinox and GMC Terrain, was selected for its proven reliability and the widespread availability of replacement parts. The LE9 incorporates a dual overhead camshaft (DOHC) valvetrain coupled with variable valve timing (VVT) technology, optimizing both performance and fuel efficiency throughout the engine’s operating range. Fuel delivery is managed by a multi-port fuel injection system. The engine generates 173 horsepower at 6200 rpm and 225 Nm (165.95 lb-ft) of torque at 4700 rpm. Power is channeled to the rear wheel through a five-speed manual transmission. The longitudinal engine mounting contributes to the vehicle’s balanced weight distribution, enhancing handling characteristics.
Driving Characteristics
The driving experience in the Slingshot 2.4 deviates significantly from that of a conventional automobile. The rear-wheel drive configuration, combined with its relatively lightweight construction (793 kg / 1748 lbs), results in a lively and engaging feel. While the 173 horsepower output isn’t exceptionally high, it’s ample for providing brisk acceleration. The five-speed manual transmission delivers precise shifts, enabling drivers to fully utilize the engine’s powerband. Compared to hypothetical higher-performance variants (which Polaris did not produce), the 2.4-liter model prioritized accessibility and ease of driving. The absence of sophisticated electronic driver aids, beyond ABS, underscores a raw and direct driving experience. The open cockpit design further amplifies the sensation of speed and freedom, creating a uniquely immersive driving environment.
Equipment & Trim Levels
The Slingshot 2.4 was offered with a relatively straightforward trim structure. Standard equipment included a basic instrument cluster, supportive bucket seats, and a steering wheel. A wide array of options were available, allowing buyers to personalize their Slingshot to their preferences. Popular options encompassed a premium audio system, custom paint schemes, and various aesthetic enhancements. A windscreen was offered as an option, providing increased protection from the elements. Interior comfort wasn’t a primary design consideration; the Slingshot was conceived as a visceral and engaging driving machine, rather than a luxury cruiser. The focus was on the driving experience, not opulent amenities.
Chassis & Braking
The Slingshot employs a steel space frame chassis, providing a rigid and lightweight structural foundation. Suspension is managed by a double wishbone setup at the front and a solid axle configuration at the rear. Braking is accomplished by ventilated discs at all four corners, equipped with an Anti-lock Braking System (ABS). The relatively simple suspension setup prioritizes affordability and ease of maintenance over complex sophistication. The three-wheeled configuration necessitates a unique steering feel, requiring drivers to adapt to the vehicle’s distinct handling characteristics. The steering is direct, but requires more input than a typical four-wheeled vehicle.
Market Reception & Comparison
The Polaris Slingshot 2.4 generally received favorable reviews, lauded for its unique design, exhilarating driving experience, and accessible price point. Critics acknowledged its unconventional nature and the lack of traditional automotive features, but these were often viewed as integral to its appeal. When compared to other entry-level sports cars, the Slingshot offered a markedly different experience, prioritizing open-air thrills over refined comfort. Fuel economy was reasonable for a performance-oriented vehicle, and maintenance costs were relatively low due to the utilization of readily available GM components. It filled a niche that few other vehicles attempted to address.
Legacy
The Polaris Slingshot 2.4 established a niche market for open-air, three-wheeled vehicles. While it didn’t achieve mainstream success, it cultivated a dedicated following and paved the way for subsequent iterations of the Slingshot. In the used car market, the 2.4-liter models remain popular due to their relative affordability and demonstrated reliability. The LE9 engine is well-regarded for its durability, and maintenance procedures are relatively straightforward. The Slingshot 2.4 continues to be appreciated by enthusiasts seeking a unique and engaging driving experience, representing a bold and unconventional departure from traditional automotive design. It remains a distinctive vehicle that stands out from the crowd, offering a driving experience unlike any other.
