The Lexus RX 300, launched in 1997, represented Lexus’s entry into the burgeoning luxury crossover SUV market. Produced through 2003, the RX 300 (designated as the XU30 chassis code) quickly became a sales success, establishing a new segment blending car-like comfort with SUV practicality. This particular variant, powered by the 1MZ-FE 3.0-liter V6 engine producing 201 horsepower and paired with a four-speed automatic transmission, was the standard powertrain offered throughout the RX 300’s production run. It served as the foundation for the RX lineup, offering a balance of luxury, reliability, and reasonable performance. The RX 300 was instrumental in defining the modern luxury crossover, and its success paved the way for subsequent generations of the RX.
Technical Specifications
| Brand | Lexus |
| Model | RX |
| Generation | RX I |
| Type (Engine) | 300 (201 Hp) |
| Start of production | 1997 |
| End of production | 2003 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 17.7 l/100 km (13.3 US mpg, 16 UK mpg, 5.6 km/l) |
| Fuel consumption (extra urban) | 10.3 l/100 km (22.8 US mpg, 27.4 UK mpg, 9.7 km/l) |
| Fuel consumption (combined) | 13 l/100 km (18.1 US mpg, 21.7 UK mpg, 7.7 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 9.2 sec |
| Acceleration 0 – 62 mph | 9.2 sec |
| Acceleration 0 – 60 mph | 8.7 sec |
| Maximum speed | 180 km/h (111.85 mph) |
| Weight-to-power ratio | 9 kg/Hp, 111.7 Hp/tonne |
| Weight-to-torque ratio | 6.4 kg/Nm, 157.2 Nm/tonne |
| Power | 201 Hp @ 5600 rpm |
| Power per litre | 67.1 Hp/l |
| Torque | 283 Nm @ 4000 rpm (208.73 lb.-ft. @ 4000 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | 1MZ-FE |
| Engine displacement | 2995 cm3 (182.77 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| Cylinder Bore | 87.5 mm (3.44 in.) |
| Piston Stroke | 83 mm (3.27 in.) |
| Compression ratio | 10.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | DOHC |
| Engine oil capacity | 4.7 l (4.97 US qt | 4.14 UK qt) |
| Coolant capacity | 9 l (9.51 US qt | 7.92 UK qt) |
| Kerb Weight | 1800 kg (3968.32 lbs.) |
| Max. weight | 2270 kg (5004.49 lbs.) |
| Max load | 470 kg (1036.17 lbs.) |
| Trunk (boot) space – minimum | 490 l (17.3 cu. ft.) |
| Trunk (boot) space – maximum | 2130 l (75.22 cu. ft.) |
| Fuel tank capacity | 75 l (19.81 US gal | 16.5 UK gal) |
| Length | 4580 mm (180.31 in.) |
| Width | 1815 mm (71.46 in.) |
| Height | 1660 mm (65.35 in.) |
| Wheelbase | 2615 mm (102.95 in.) |
| Front track | 1565 mm (61.61 in.) |
| Rear (Back) track | 1550 mm (61.02 in.) |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the front wheels of the vehicle. |
| Drive wheel | Front wheel drive |
| Number of gears and type of gearbox | 4 gears, automatic transmission |
| Front suspension | Coil spring |
| Rear suspension | Coil spring |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Hydraulic Steering |
| Tires size | 225/60 R17 |
Powertrain & Engine Architecture
The heart of the RX 300 is the 1MZ-FE, a 3.0-liter (2995 cc) 60-degree V6 engine. This engine utilizes a cast-iron block with an aluminum cylinder head, a common configuration for durability and weight reduction. It features dual overhead camshafts (DOHC) and four valves per cylinder, contributing to its relatively high output for its displacement. Fuel delivery is managed by a multi-port fuel injection system, providing precise fuel metering for optimal combustion. The 1MZ-FE is known for its smooth operation and inherent reliability. The four-speed automatic transmission, while not offering the efficiency of modern transmissions with more gears, was well-suited to the engine’s torque curve and provided comfortable, seamless shifts. This transmission was designed for smooth operation rather than aggressive performance.
Driving Characteristics
The RX 300 with the 1MZ-FE and four-speed automatic delivers a comfortable and refined driving experience. Acceleration is adequate for everyday driving, with a 0-60 mph time of around 8.7 seconds. However, it’s not a particularly sporty vehicle. The automatic transmission prioritizes smoothness over quick shifts, and the engine’s peak torque of 283 Nm (208.73 lb-ft) is delivered at 4000 rpm, meaning the engine needs to be revved to access its full potential. Compared to potential upgrades like a V8, the RX 300 offers a more fuel-efficient and accessible entry point into the Lexus luxury SUV range. The front-wheel-drive configuration contributes to predictable handling, but it lacks the all-weather capability of all-wheel-drive variants.
Equipment & Trim Levels
The RX 300 came standard with a generous array of features for its time, including power windows, power locks, air conditioning, a premium sound system, and leather upholstery. Optional extras included a navigation system, a sunroof, and upgraded audio options. The interior was designed with a focus on comfort and ergonomics, featuring supportive seats and a well-laid-out dashboard. Trim levels were relatively simple, with most RX 300s being well-equipped from the factory. The emphasis was on providing a luxurious experience without requiring extensive option packages.
Chassis & Braking
The RX 300 utilizes a coil spring independent suspension at all four corners, providing a comfortable ride quality. The front suspension features MacPherson struts, while the rear utilizes a double-wishbone setup. Braking duties are handled by ventilated discs at the front and solid discs at the rear. Anti-lock brakes (ABS) were standard, enhancing safety and control during emergency braking situations. The chassis was designed to prioritize ride comfort and noise isolation, contributing to the RX 300’s refined character. Stabilizer bars were included to reduce body roll during cornering, but the RX 300 was not intended to be a performance-oriented vehicle.
Market Reception & Comparison
The Lexus RX 300 was widely praised by critics for its comfortable ride, luxurious interior, and strong reliability. It was often compared to other luxury SUVs of the time, such as the Acura MDX and the BMW X5. While the RX 300 didn’t offer the same level of performance as some of its competitors, it excelled in providing a refined and comfortable driving experience. Fuel economy was respectable for its class, averaging around 18.1 US mpg combined. The RX 300’s reputation for reliability contributed to its strong resale value.
Legacy
The Lexus RX 300 established the luxury crossover SUV segment and set a high standard for reliability and refinement. The 1MZ-FE engine, paired with the four-speed automatic transmission, proved to be a durable and dependable powertrain. Today, well-maintained RX 300s are still found on the road, a testament to their build quality. While they may not offer the latest technology or features, they remain a popular choice for buyers seeking a comfortable, reliable, and affordable luxury SUV. The RX 300’s success paved the way for subsequent generations of the RX, which continue to be bestsellers in the luxury SUV market.
