1990 Subaru Rex 660 AX-i Specs

OVERVIEW

With a fuel consumption of 43.5 mpg US - 52.3 mpg UK - 5.4 L/100km, a weight of 1433 lbs (650 kg), the Subaru Rex 660 AX-i has a water cooling 4 cylinder SOHC engine, a Regular gasoline engine EN07. This engine EN07 produces a maximum power of 46.6 PS (46 bhp - 34.3 kW) at 6400 rpm and a maximum torque of 53.9 Nm (39.7 lb.ft - 5.5 kg.m) at 4000 rpm. The engine power is transmitted to the road by the front wheel drive (FF) with a ECVT gearbox. For stopping power, the Subaru Rex 660 AX-i braking system includes Leading trailing drum brake at the rear and Disk at the front. Stock tire sizes are 155/70 on 12 inch rims at the rear and 155/70 on 12 inch rims at the front. Chassis details - Subaru Rex 660 AX-i has semi trailing arm type independent suspension rear suspension and strut independent front suspension for road holding and ride confort.

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By Brian Wong, Reviewed by: Kurt Niebuhr, Updated on April 19, 2024

Introduction to the Subaru Rex 660 AX-i

The Subaru Rex 660 AX-i, produced from March 1990 to February 1992, is a compact hatchback that garnered attention for its efficient performance and compact design. As part of the E-KH3 frame name series, this front-wheel-drive (FF) vehicle boasted a 658 cm3 engine, making it suitable for urban driving and daily commuting.

With a length of 329.5 cm and a width of 139.5 cm, the Rex 660 AX-i was designed to be nimble and easily maneuverable in tight spaces. Its exterior height reached 142 cm, providing ample headroom for passengers. Inside, the car accommodated four seats across three doors, offering practicality without compromising on passenger capacity.

The lightweight build of approximately 650 kg enhanced the vehicle's fuel efficiency and overall agility. Equipped with an ECVT transmission gearbox featuring multiple speeds, the Rex 660 AX-i delivered smooth acceleration and a seamless driving experience.

Under the hood, the Subaru Rex 660 AX-i housed an engine coded as EN07. This 4-cylinder, water-cooled, SOHC engine generated 46.6 PS of power at 6400 rpm and produced a maximum torque of 53.9 Nm at 4000 rpm. The engine's compression ratio stood at 9, contributing to its fuel efficiency and economical performance.

Speaking of fuel efficiency, the Subaru Rex 660 AX-i achieved an impressive fuel consumption rate. In the 10/15 mode, it recorded 43.5 mpg (US) or 52.3 mpg (UK) or 5.4 L/100km. In the 60 km/h mode, the fuel consumption improved even further, reaching 63.5 mpg (US) or 76.3 mpg (UK) or 3.7 L/100km, making it a cost-effective choice for daily drives.

The suspension system comprised a strut independent setup in the front and a semi-trailing arm type independent suspension in the rear, ensuring a balance of comfort and stability. The Subaru Rex 660 AX-i was equipped with 155/70 R12 tires on both front and rear wheels, providing sufficient grip and traction on various road surfaces.

As for its amenities, the Rex 660 AX-i came with standard features like power-adjustable door mirrors, a back wiper, tilt steering, and a radio with autoreverse cassette functionality. Safety-wise, the model did not include airbags or additional safety belt features, which was common for its era.

The Subaru Rex 660 AX-i catered to those seeking a compact, economical, and reliable vehicle for daily urban travel. Its efficient engine, lightweight design, and practical dimensions contributed to its popularity during its production years.

Model Years: 1990-1992

The Subaru Rex 660 AX-i was a remarkable hatchback model that graced the automotive scene from 1990 to 1992. This particular period marked the production years of this compact and efficient vehicle, capturing the attention of urban drivers and commuters alike.

During these model years, the Subaru Rex 660 AX-i showcased its prowess as a front-wheel-drive (FF) car with a 658 cm3 engine capacity, providing a perfect blend of power and fuel efficiency for city driving. Its compact frame, part of the E-KH3 series, made it an ideal choice for navigating through congested streets and tight parking spaces.

The exterior dimensions of the Rex 660 AX-i highlighted its compactness, with a length of 329.5 cm and a width of 139.5 cm. The car stood at 142 cm in height, ensuring ample headroom for occupants. Inside, the hatchback accommodated four seats across three doors, offering practicality and convenience for daily use.

With a weight of approximately 650 kg, the Rex 660 AX-i was relatively lightweight, contributing to its agile handling and fuel efficiency. The ECVT transmission gearbox with multiple speeds provided smooth acceleration and seamless gear changes, enhancing the overall driving experience.

Powering the Subaru Rex 660 AX-i was the EN07 engine, a 4-cylinder, water-cooled, SOHC unit. This engine delivered a maximum power output of 46.6 PS at 6400 rpm, and a maximum torque of 53.9 Nm at 4000 rpm. Its 9 compression ratio further optimized fuel consumption and performance.

Speaking of fuel efficiency, the Rex 660 AX-i excelled in this aspect. With its economical engine and lightweight design, it achieved an impressive fuel consumption rate, making it a cost-effective choice for daily commuting.

The suspension system featured a strut independent setup in the front and a semi-trailing arm type independent suspension in the rear, striking a balance between comfort and stability. The car was equipped with 155/70 R12 tires on both front and rear wheels, providing ample grip on various road surfaces.

Inside the cabin, the Subaru Rex 660 AX-i offered standard features such as power-adjustable door mirrors and a radio with autoreverse cassette functionality. However, it lacked advanced safety features like airbags, which were not as prevalent during that era.

In conclusion, the 1990-1992 Subaru Rex 660 AX-i was a standout model known for its compactness, fuel efficiency, and practicality. It catered to urban drivers seeking a reliable and economical hatchback for their daily travels. As with any classic car, enthusiasts and collectors still appreciate this unique vehicle for its historical significance and distinctive charm.

Generations and Trim Levels

The 1990-1992 Subaru Rex 660 AX-i was a notable hatchback that represented a specific generation in the Rex lineup. Throughout its production years, the model maintained its distinctive features and trim levels, making it a sought-after choice for urban driving.

As part of the Rex series, the 660 AX-i was part of a particular generation that spanned from 1990 to 1992. During this period, Subaru showcased its engineering excellence by delivering a compact and fuel-efficient vehicle designed for city life.

The trim levels offered for the Subaru Rex 660 AX-i were carefully crafted to cater to different preferences and requirements. While specific details about individual trims may vary, they all shared the fundamental attributes that made the Rex 660 AX-i popular among drivers seeking practicality and efficiency.

In addition to its reliable front-wheel-drive (FF) configuration, the Rex 660 AX-i boasted a 658 cm3 engine, which provided sufficient power for urban commuting while ensuring an economical fuel consumption rate.

The interior of the Rex 660 AX-i featured comfortable seating for four passengers, arranged across three doors, providing easy access to the cabin. The compact dimensions of the vehicle made it effortless to navigate through crowded city streets and park in tight spaces.

Under the hood, the EN07 engine, a 4-cylinder, water-cooled, SOHC unit, powered the Rex 660 AX-i, showcasing Subaru's commitment to engineering durable and efficient powertrains.

While the trim levels may have offered varying features, each version of the Rex 660 AX-i included essential amenities such as power-adjustable door mirrors and a radio with autoreverse cassette functionality.

In summary, the 1990-1992 Subaru Rex 660 AX-i represented a specific generation known for its practicality, efficiency, and city-friendly design. With a range of trim levels available, drivers could choose the model that best suited their preferences and requirements. The Rex 660 AX-i remains a notable addition to Subaru's legacy, admired by enthusiasts and collectors for its distinctive characteristics and historical significance.

Engine Specifications

The engine specifications of the 1990-1992 Subaru Rex 660 AX-i showcased the engineering prowess of Subaru, combining efficiency and performance in a compact package. At the heart of this hatchback model was the reliable EN07 engine, which played a significant role in its popularity among urban drivers.

The EN07 engine was a 4-cylinder, water-cooled, and single overhead camshaft (SOHC) configuration. With a displacement of 658 cm3, the engine demonstrated a perfect balance of power and fuel efficiency, making it ideal for city driving and daily commuting.

During its production years, the EN07 engine delivered a maximum power output of 46.6 PS at 6400 rpm, and a maximum torque of 53.9 Nm at 4000 rpm. These figures ensured responsive performance for navigating through city traffic and tackling everyday driving challenges.

The engine's compression ratio of 9 contributed to its fuel efficiency, allowing drivers to cover longer distances on a single tank of fuel. This was further complemented by the lightweight design of the Rex 660 AX-i, which enhanced its overall efficiency and agility.

The EN07 engine was fueled by regular gasoline, making it a cost-effective choice for budget-conscious drivers. With its economical operation, the Rex 660 AX-i presented an attractive option for those seeking a practical and efficient hatchback.

Subaru engineered the Rex 660 AX-i with a Continuously Variable Transmission (CVT) gearbox, offering seamless gear transitions and a smooth driving experience. The CVT gearbox featured a ratio of 2.503, contributing to the vehicle's overall efficiency and ease of use.

As an environmentally conscious choice, the Subaru Rex 660 AX-i demonstrated impressive fuel consumption figures. In the 10/15 mode, it achieved 43.5 mpg (US) or 52.3 mpg (UK) or 5.4 L/100km, ensuring fewer visits to the fuel station. In the 60 km/h mode, the fuel consumption improved further, reaching 63.5 mpg (US) or 76.3 mpg (UK) or 3.7 L/100km, making it an economical option for daily city driving.

Overall, the engine specifications of the 1990-1992 Subaru Rex 660 AX-i exemplified the brand's commitment to engineering efficient and reliable powertrains. The EN07 engine's blend of performance and fuel economy, combined with the hatchback's compact design, made the Rex 660 AX-i a popular choice for urban dwellers and practical drivers alike.

Fuel Tank Capacity

The fuel tank capacity of the 1990-1992 Subaru Rex 660 AX-i played a crucial role in its practicality and efficiency as a compact hatchback designed for urban driving. The fuel tank was engineered to strike a balance between providing a sufficient range and minimizing weight to enhance fuel economy.

During these model years, the Subaru Rex 660 AX-i was equipped with a fuel tank capable of holding approximately 8.4 US gallons or 7 UK gallons, which is approximately 32 liters. This capacity allowed the vehicle to cover a considerable distance on a single tank of fuel, reducing the frequency of refueling stops during daily commutes and city driving.

The engineers at Subaru carefully considered the ideal fuel tank capacity to complement the car's overall efficiency and lightweight design. By optimizing the balance between fuel capacity and vehicle weight, the Rex 660 AX-i was able to achieve impressive fuel consumption figures, making it a cost-effective choice for budget-conscious drivers.

The fuel tank's positioning within the vehicle's frame and its capacity worked in tandem with the engine's fuel efficiency to maximize the hatchback's range. With a focus on practicality and convenience, Subaru ensured that the fuel tank capacity met the needs of urban drivers seeking an economical and reliable vehicle for daily use.

In conclusion, the 1990-1992 Subaru Rex 660 AX-i's fuel tank capacity of approximately 8.4 US gallons or 7 UK gallons played a vital role in supporting its efficiency and practicality. The well-engineered combination of fuel tank size, engine efficiency, and lightweight design made the Rex 660 AX-i an ideal choice for navigating city streets and completing daily commutes with ease.

Fuel Consumption and MPG

The fuel consumption and MPG (miles per gallon) figures of the 1990-1992 Subaru Rex 660 AX-i were key highlights that appealed to drivers seeking an economical and efficient hatchback for their daily commutes. Subaru's engineering prowess and focus on fuel efficiency were evident in the Rex 660 AX-i's impressive consumption rates.

In the 10/15 mode, the Subaru Rex 660 AX-i recorded an average fuel consumption of approximately 43.5 mpg (US) or 52.3 mpg (UK) or 5.4 L/100km. This mode represented a mix of city and highway driving conditions, showcasing the vehicle's adaptability and efficiency across various terrains.

Furthermore, the Rex 660 AX-i excelled in fuel economy when subjected to a specific driving scenario. In the 60 km/h mode, it achieved approximately 63.5 mpg (US) or 76.3 mpg (UK) or 3.7 L/100km. This mode simulated steady highway cruising at a constant speed, revealing the hatchback's ability to deliver exceptional fuel efficiency during long journeys.

These impressive fuel consumption figures made the 1990-1992 Subaru Rex 660 AX-i an economical choice for daily urban driving and extended road trips. The harmonious combination of the engine's efficiency, lightweight design, and fuel tank capacity contributed to the vehicle's capability to cover longer distances with minimal fuel consumption.

Subaru's commitment to sustainability and cost-effectiveness was evident in the Rex 660 AX-i's fuel consumption performance. The model resonated with drivers seeking an eco-friendly and budget-conscious vehicle that didn't compromise on practicality or comfort.

In conclusion, the 1990-1992 Subaru Rex 660 AX-i's fuel consumption figures, with an average of approximately 43.5 mpg (US) or 52.3 mpg (UK) or 5.4 L/100km in the 10/15 mode and 63.5 mpg (US) or 76.3 mpg (UK) or 3.7 L/100km in the 60 km/h mode, highlighted its efficiency and suitability for everyday urban driving and extended highway journeys.

Dimensions and Sizes

The dimensions and sizes of the 1990-1992 Subaru Rex 660 AX-i contributed to its compact and practical design, making it well-suited for urban driving and tight parking spaces. Subaru carefully engineered the vehicle to ensure its adaptability to city life while offering ample space for passengers and cargo.

Externally, the Rex 660 AX-i measured approximately 329.5 cm in length, 139.5 cm in width, and 142 cm in height. These compact dimensions allowed the hatchback to maneuver effortlessly through congested streets and navigate tight corners with ease.

Inside the cabin, the Subaru Rex 660 AX-i offered a comfortable space for up to four passengers. The interior length measured approximately 175 cm, while the interior width reached around 120.5 cm. The interior height provided ample headroom, measuring approximately 118.5 cm, enhancing passenger comfort during travels.

The hatchback's wheelbase, the distance between the front and rear axles, measured approximately 229.5 cm. This wheelbase provided stability and balanced handling, contributing to the vehicle's overall agility on the road.

For practicality, the Rex 660 AX-i featured three doors, allowing easy access for passengers and cargo. The car's lightweight build, weighing approximately 650 kg, further enhanced its maneuverability and fuel efficiency.

Both the front and rear axles of the Subaru Rex 660 AX-i measured approximately 122.5 cm in length. Additionally, the hatchback's minimum turning circle, indicating the smallest space required to execute a U-turn, was approximately 4.5 meters, making it ideal for navigating narrow streets and parking lots.

Ground clearance, the space between the ground and the vehicle's undercarriage, measured approximately 17 cm. This measurement allowed the Rex 660 AX-i to handle various road conditions and minor obstacles without compromising passenger comfort.

In conclusion, the 1990-1992 Subaru Rex 660 AX-i's dimensions and sizes showcased its compactness and practicality for urban driving. With its nimble exterior dimensions, comfortable interior space, and well-balanced wheelbase, the Rex 660 AX-i offered a delightful driving experience for daily commutes and city adventures.

Wheel Specifications

The wheel specifications of the 1990-1992 Subaru Rex 660 AX-i were carefully designed to complement its compact and efficient nature, providing the hatchback with the necessary grip and stability for urban driving.

The Subaru Rex 660 AX-i was equipped with 12-inch wheels, featuring tire dimensions of 155/70 R12 for both the front and rear wheels. These tire dimensions struck a balance between traction, handling, and fuel efficiency, ensuring a smooth and comfortable ride for passengers.

The use of 12-inch wheels on the Rex 660 AX-i further contributed to its lightweight design, enhancing the vehicle's overall agility and maneuverability in city traffic and tight parking spaces. The nimble nature of the hatchback made it easy to navigate through congested streets and turn corners with ease.

The wheel specifications of the Rex 660 AX-i also included standard features such as standard aluminum disks, which provided a sturdy and durable foundation for the tires. This ensured optimal contact with the road surface, enhancing the hatchback's overall performance and braking efficiency.

In summary, the 1990-1992 Subaru Rex 660 AX-i's wheel specifications, featuring 12-inch wheels with tire dimensions of 155/70 R12, were integral to its compact and agile design. The combination of these wheel features and the hatchback's lightweight build contributed to its fuel efficiency, making it a practical and economical choice for urban driving.

Fuel Average and Efficiency

The fuel average and efficiency of the 1990-1992 Subaru Rex 660 AX-i were key factors that contributed to its appeal as an economical and practical hatchback. Subaru's commitment to engineering efficiency was evident in the Rex 660 AX-i's impressive fuel consumption figures and overall performance.

The Subaru Rex 660 AX-i showcased excellent fuel efficiency in both city and highway driving conditions. In the 10/15 mode, which simulated a combination of city and suburban driving, the Rex 660 AX-i achieved an average fuel consumption of approximately 43.5 mpg (US) or 52.3 mpg (UK) or 5.4 L/100km. This efficiency made it a cost-effective choice for daily commuting and urban travel.

Furthermore, the hatchback excelled in fuel economy during steady highway cruising. In the 60 km/h mode, the Rex 660 AX-i recorded an impressive average fuel consumption of approximately 63.5 mpg (US) or 76.3 mpg (UK) or 3.7 L/100km. This mode showcased the vehicle's ability to deliver outstanding fuel efficiency during extended highway journeys, making it suitable for long-distance travels as well.

Subaru achieved such fuel efficiency through a combination of factors, including the lightweight design of the Rex 660 AX-i, its aerodynamic profile, and the engineering of its EN07 engine. The 658 cm3 engine's advanced technology and efficient performance contributed to the hatchback's economical fuel consumption and reduced carbon emissions.

Drivers of the Rex 660 AX-i appreciated its ability to cover longer distances on a single tank of fuel, reducing the frequency of refueling stops and saving on fuel expenses. The vehicle's fuel efficiency was well-suited for city driving, where stop-and-go traffic and short trips often lead to higher fuel consumption.

In conclusion, the 1990-1992 Subaru Rex 660 AX-i's fuel average and efficiency, with an average fuel consumption of approximately 43.5 mpg (US) or 52.3 mpg (UK) or 5.4 L/100km in the 10/15 mode and 63.5 mpg (US) or 76.3 mpg (UK) or 3.7 L/100km in the 60 km/h mode, showcased its economical and eco-friendly nature. The hatchback's efficient performance and impressive fuel economy made it a popular choice for drivers seeking an economical and environmentally conscious vehicle.

Conclusion and Final Thoughts

The 1990-1992 Subaru Rex 660 AX-i left a lasting impression as a compact and efficient hatchback designed for urban living. Its distinctive features and engineering excellence made it a popular choice among drivers seeking a practical and economical vehicle.

During this period, Subaru showcased its commitment to sustainability and fuel efficiency through the Rex 660 AX-i's impressive fuel consumption figures. Whether navigating through city streets or embarking on long highway journeys, the hatchback's EN07 engine proved to be an economical and eco-friendly powerhouse.

The compact dimensions of the Subaru Rex 660 AX-i made it perfectly suited for city driving, allowing drivers to effortlessly weave through traffic and park in tight spaces. The lightweight design further enhanced its agility, offering a delightful driving experience for daily commutes and urban adventures.

Inside the cabin, the Rex 660 AX-i provided ample space for four passengers, ensuring a comfortable ride for everyone on board. The inclusion of essential features like power-adjustable door mirrors and a radio with autoreverse cassette functionality added convenience to the driving experience.

Subaru's attention to safety was evident in the Rex 660 AX-i's features, such as standard front disc brakes and semi-trailing arm type independent rear suspension, providing stable handling and responsive braking.

The Subaru Rex 660 AX-i stood out for its practicality and cost-effectiveness, offering impressive fuel efficiency that translated into savings for drivers. The hatchback's fuel tank capacity allowed for longer journeys with fewer stops at the fuel station.

In conclusion, the 1990-1992 Subaru Rex 660 AX-i was a testament to Subaru's dedication to engineering practical and efficient vehicles. Its combination of fuel efficiency, compact design, and comfortable interior made it a reliable and eco-friendly choice for urban drivers seeking a versatile hatchback.

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