The Lexus RX 300, produced from 1997 to 2003, marked Lexus’s entry into the burgeoning luxury crossover SUV market. Representing the first generation (designated XU10), the RX 300 was a pivotal model for the brand, establishing a reputation for refinement, reliability, and a comfortable ride. This particular variant, powered by the 1MZ-FE 3.0-liter V6 engine producing 223 horsepower, and paired with a four-speed automatic transmission, was positioned as the mainstream offering within the RX lineup, appealing to buyers seeking a balance of luxury and practicality. It served as the foundation for the RX series, which would become a cornerstone of Lexus’s sales success.
Technical Specifications
| Brand | Lexus |
| Model | RX |
| Generation | RX I |
| Type (Engine) | 300 (223 Hp) |
| Start of production | 1997 |
| End of production | 2003 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 13.1 l/100 km (18 US mpg, 21.6 UK mpg) |
| Fuel consumption (extra urban) | 10.7 l/100 km (22 US mpg, 26.4 UK mpg) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 8.5 sec |
| Acceleration 0 – 62 mph | 8.5 sec |
| Acceleration 0 – 60 mph | 8.1 sec |
| Maximum speed | 180 km/h (111.85 mph) |
| Weight-to-power ratio | 7.7 kg/Hp |
| Weight-to-torque ratio | 5.7 kg/Nm |
| Power | 223 Hp @ 5800 rpm |
| Torque | 301 Nm @ 4400 rpm (222.01 lb.-ft. @ 4400 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 | 1720 kg (3791.95 lbs.) |
| Max. weight | 2245 kg (4949.38 lbs.) |
| Max load | 525 kg (1157.43 lbs.) |
| Trunk (boot) space – minimum | 860 l (30.37 cu. ft.) |
| Trunk (boot) space – maximum | 2130 l (75.22 cu. ft.) |
| Fuel tank capacity | 65 l (17.17 US gal | 14.3 UK gal) |
| Length | 4575 mm (180.12 in.) |
| Width | 1816 mm (71.5 in.) |
| Height | 1660 mm (65.35 in.) |
| Wheelbase | 2619 mm (103.11 in.) |
| Front track | 1562 mm (61.5 in.) |
| Rear (Back) track | 1565 mm (61.61 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 | 225/70 R16 |
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 balancing durability and weight. It features a double overhead camshaft (DOHC) valvetrain with four valves per cylinder, contributing to its relatively high specific output. 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 most modern gear ratios, was well-suited to the engine’s torque curve and prioritized comfortable, seamless shifts. This transmission was designed for durability and ease of maintenance, rather than outright performance.
Driving Characteristics
The RX 300 3.0L/Automatic combination delivered a comfortable and refined driving experience. Acceleration from 0-60 mph took approximately 8.1 seconds, which was adequate for the time but not particularly sporty. The automatic transmission, while smooth, could feel somewhat hesitant during quick acceleration or overtaking maneuvers. The gear ratios were geared towards fuel efficiency and relaxed cruising, rather than maximizing performance. Compared to the later RX 330 or RX 400 models, the RX 300 felt less powerful, but it offered a more manageable and less demanding driving experience. The front-wheel-drive configuration provided predictable handling, although it lacked the all-weather capability of the optional all-wheel-drive system.
Equipment & Trim Levels
The RX 300 came reasonably well-equipped, even in its base form. Standard features typically included power windows, power locks, air conditioning, a CD player, and alloy wheels. Higher trim levels, such as the RX 300 with the Navigation Package, added features like a GPS navigation system, upgraded audio, leather upholstery, and power-adjustable front seats. Interior upholstery was typically cloth in the base models, with leather being an available upgrade. The dashboard layout was functional and ergonomically designed, prioritizing ease of use. Optional extras included a sunroof, heated seats, and a premium sound system.
Chassis & Braking
The RX 300 utilized a fully independent suspension system, with coil springs and shock absorbers at all four corners. This setup provided a comfortable ride, effectively absorbing bumps and irregularities in the road surface. The front suspension featured MacPherson struts, while the rear suspension employed a double-wishbone configuration. Braking duties were handled by ventilated discs at the front and solid discs at the rear. An Anti-lock Braking System (ABS) was standard, enhancing safety and control during emergency braking situations. The RX 300’s chassis was designed to prioritize comfort and stability, rather than sporty handling.
Market Reception & Comparison
The Lexus RX 300 was generally well-received by automotive critics. It was praised for its comfortable ride, quiet interior, and reputation for reliability. However, some critics noted its relatively modest performance and somewhat uninspired styling. Compared to other luxury SUVs of the time, such as the Acura MDX or the BMW X5, the RX 300 offered a more affordable entry point into the segment. Fuel economy was respectable for its class, averaging around 18 mpg in the city and 22 mpg on the highway. The RX 300’s reliability proved to be a major selling point, contributing to its strong resale value.
Legacy
The Lexus RX 300 established the RX series as a major player in the luxury crossover SUV market. Its blend of comfort, reliability, and practicality resonated with buyers, and it paved the way for subsequent generations of the RX. The 1MZ-FE engine, while eventually superseded by newer designs, proved to be a durable and long-lasting powerplant. Today, well-maintained RX 300s are still found on the road, a testament to their inherent reliability. In the used car market, the RX 300 remains a popular choice for buyers seeking an affordable and dependable luxury SUV, though maintenance costs for older vehicles should be considered.
