The Subaru Stella 0.7 (64 hp) Custom RS is a kei car produced by Subaru between 2006 and 2011. Part of the first generation Stella (launched in 2006), the Custom RS represented a modestly equipped, yet practical, variant within the Stella lineup. Designed primarily for the Japanese domestic market (JDM), the Stella aimed to provide affordable and efficient transportation in a compact package, adhering to the strict regulations governing kei cars. The Custom RS trim specifically targeted buyers seeking a balance between functionality and a slightly more sporting aesthetic compared to the base models.
Technical Specifications
| Brand | Subaru |
| Model | Stella |
| Generation | Stella |
| Type (Engine) | 0.7 (64 Hp) Custom RS |
| Start of production | 2006 |
| End of production | 2011 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Station wagon (estate) |
| Seats | 5 |
| Doors | 5 |
| Fuel Type | Petrol (Gasoline) |
| Emission standard | Euro 4 |
| Weight-to-power ratio | 13.9 kg/Hp, 71.9 Hp/tonne |
| Weight-to-torque ratio | 10.6 kg/Nm, 94.4 Nm/tonne |
| Power | 64 Hp @ 6400 rpm |
| Power per litre | 97.3 Hp/l |
| Torque | 84 Nm @ 4400 rpm, 61.96 lb.-ft. @ 4400 rpm |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | EN07 |
| Engine displacement | 658 cm3, 40.15 cu. in. |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 56 mm, 2.2 in. |
| Piston Stroke | 66.8 mm, 2.63 in. |
| Compression ratio | 10:1 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Supercharger, Intercooler |
| Valvetrain | OHC |
| Engine oil capacity | 2.4 l, 2.54 US qt | 2.11 UK qt |
| Kerb Weight | 890 kg, 1962.11 lbs |
| Length | 3395 mm, 133.66 in |
| Width | 1475 mm, 58.07 in |
| Height | 1645 mm, 64.76 in |
| Wheelbase | 2360 mm, 92.91 in |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the front wheels of the vehicle. |
| Drive wheel | Front wheel drive |
Powertrain & Engine Architecture
The Subaru Stella 0.7 Custom RS is powered by the EN07, a 658cc inline-four cylinder engine. This engine utilizes a single overhead camshaft (OHC) valvetrain and multi-point fuel injection. A key feature of the EN07 in the Custom RS variant is its inclusion of a supercharger and intercooler. This forced induction system significantly boosts power output for a kei car engine, bringing it to 64 horsepower at 6400 rpm and 84 Nm (61.96 lb-ft) of torque at 4400 rpm. The supercharger provides instant boost, unlike a turbocharger which has some lag. The engine is mounted longitudinally in the front of the vehicle. The transmission is a continuously variable transmission (CVT), a common choice in kei cars for its smooth operation and efficiency. The CVT is tuned for fuel economy, prioritizing smooth acceleration over outright performance.
Driving Characteristics
The driving experience in the Stella 0.7 Custom RS is characterized by its nimble handling and adequate, though not exhilarating, acceleration. The supercharger helps to mitigate the lack of displacement, providing a more responsive feel than naturally aspirated kei car engines. However, the CVT transmission, while smooth, can feel somewhat disconnected, and doesn’t offer the direct engagement of a traditional automatic or manual gearbox. The relatively light weight of the vehicle (890 kg or 1962 lbs) contributes to its agility in urban environments. Compared to the base Stella models without the supercharger, the Custom RS offers a noticeable improvement in acceleration and overall drivability. It’s not a sports car by any means, but it provides sufficient power for navigating city streets and highways.
Equipment & Trim Levels
The Custom RS trim level offered a step up in features compared to the more basic Stella variants. Standard equipment typically included air conditioning, power windows, and a basic audio system. The interior featured cloth upholstery, and the dashboard was constructed from durable plastics. Optional extras could include alloy wheels, upgraded audio systems, and various cosmetic enhancements. The Custom RS also featured slightly more aggressive styling cues, such as a unique front grille and body-colored mirrors, differentiating it from the lower trims. While not luxurious, the interior was functional and well-laid-out for a kei car.
Chassis & Braking
The Subaru Stella utilizes a front-engine, front-wheel-drive layout. The suspension consists of MacPherson struts at the front and a torsion beam axle at the rear. The braking system features disc brakes at the front and drum brakes at the rear – a common configuration for kei cars to keep costs down. The steering is power-assisted, making it easy to maneuver in tight spaces. The chassis is designed for comfort and efficiency rather than sporty handling, prioritizing a smooth ride over sharp cornering. Stabilizer bars were typically not included as standard equipment on the Custom RS, further emphasizing its focus on everyday usability.
Market Reception & Comparison
The Subaru Stella, and the Custom RS variant, were well-received in the Japanese market as a practical and affordable kei car option. Critics praised its fuel efficiency, compact size, and ease of driving. The supercharged engine in the Custom RS was seen as a significant improvement over the naturally aspirated versions, providing a more enjoyable driving experience. Compared to competitors like the Daihatsu Mira and Suzuki Alto, the Stella offered a slightly more refined interior and a more distinctive styling. However, its price was generally a bit higher than some of its rivals. Fuel economy was a strong point, with the Stella achieving respectable figures for its class.
Legacy
The Subaru Stella, while not exported to many markets outside of Japan, remains a popular choice in the used car market. The EN07 engine, particularly the supercharged version found in the Custom RS, is generally considered reliable, although regular maintenance is crucial. The CVT transmission, like all CVTs, requires proper fluid changes to ensure longevity. The Stella’s compact size and fuel efficiency continue to make it an attractive option for urban commuters. Parts availability can be a concern outside of Japan, but a dedicated enthusiast community exists to support owners. The Stella represents a significant example of Subaru’s engineering prowess within the constraints of the kei car regulations.
