The BMW X5 (E53) 4.6is Steptronic, produced from 2000 to 2003, represented the performance pinnacle of the first-generation X5 Sport Activity Vehicle (SAV). Positioned as the top-tier trim, it offered a significant step up in power and luxury compared to the 3.0i and 4.4i models. The 4.6is was BMW’s answer to demands for a more potent X5, aimed at buyers seeking a blend of on-road performance and the practicality of an SUV. It was a key model in establishing the X5 as a serious contender in the burgeoning luxury SUV segment, particularly in North America and Europe.
Technical Specifications
| Brand | BMW |
| Model | X5 |
| Generation | X5 (E53) |
| Type (Engine) | 4.6is (347 Hp) Steptronic |
| Start of production | 2000 |
| End of production | 2003 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (economy) – urban | 21 l/100 km (11.2 US mpg, 13.5 UK mpg, 4.8 km/l) |
| Fuel consumption (economy) – extra urban | 11.4 l/100 km (20.6 US mpg, 24.8 UK mpg, 8.8 km/l) |
| Fuel consumption (economy) – combined | 14.9 l/100 km (15.8 US mpg, 19 UK mpg, 6.7 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 6.5 sec |
| Acceleration 0 – 62 mph | 6.5 sec |
| Acceleration 0 – 60 mph | 6.2 sec |
| Maximum speed | 240 km/h (149.13 mph) |
| Weight-to-power ratio | 6.1 kg/Hp, 164.8 Hp/tonne |
| Weight-to-torque ratio | 4.4 kg/Nm, 228 Nm/tonne |
| Power | 347 Hp @ 5700 rpm |
| Power per litre | 75.1 Hp/l |
| Torque | 480 Nm @ 3700 rpm (354.03 lb.-ft. @ 3700 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | M62B46 |
| Engine displacement | 4619 cm3 (281.87 cu. in.) |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Cylinder Bore | 93 mm (3.66 in.) |
| Piston Stroke | 85 mm (3.35 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 | 8 l (8.45 US qt | 7.04 UK qt) |
| Coolant | 13 l (13.74 US qt | 11.44 UK qt) |
| Kerb Weight | 2105 kg (4640.73 lbs.) |
| Max. weight | 2685 kg (5919.41 lbs.) |
| Max load | 580 kg (1278.68 lbs.) |
| Trunk (boot) space – minimum | 465 l (16.42 cu. ft.) |
| Trunk (boot) space – maximum | 1550 l (54.74 cu. ft.) |
| Fuel tank capacity | 93 l (24.57 US gal | 20.46 UK gal) |
| Length | 4666 mm (183.7 in.) |
| Width | 1872 mm (73.7 in.) |
| Height | 1717 mm (67.6 in.) |
| Wheelbase | 2820 mm (111.02 in.) |
| Front track | 1576 mm (62.05 in.) |
| Rear (Back) track | 1576 mm (62.05 in.) |
| Drag coefficient (Cd) | 0.38 |
| Minimum turning circle | 12.1 m (39.7 ft.) |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 5 gears, automatic transmission |
| Front suspension | Double wishbone |
| Rear suspension | Independent multi-link suspension |
| Front brakes | Ventilated discs, 332 mm |
| Rear brakes | Disc, 324 mm |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Hydraulic Steering |
| Tires size | 275/40 R20; 315/35 R20 |
| Wheel rims size | 20 |
Powertrain & Engine Architecture
The heart of the X5 4.6is is the M62B46 engine, a 4.6-liter naturally aspirated V8. This engine, a derivative of BMW’s modular V8 family, featured all-aluminum construction, double overhead camshafts (DOHC) with four valves per cylinder, and individual throttle butterflies. Fuel delivery was handled by a multi-port fuel injection system. The M62B46 produced 347 horsepower at 5700 rpm and 354 lb-ft of torque at 3700 rpm. The engine’s design prioritized smooth power delivery and responsiveness. Paired with the engine was a 5-speed Steptronic automatic transmission, offering both fully automatic operation and a manual shift mode. This transmission was specifically tuned to handle the increased power output of the 4.6is, featuring reinforced internals and a quicker shift response compared to the transmissions found in the 3.0i and 4.4i models.
Driving Characteristics
The X5 4.6is delivered a noticeably more engaging driving experience than its siblings. The increased horsepower and torque resulted in significantly quicker acceleration – 0 to 60 mph in approximately 6.2 seconds – and a more confident feel when overtaking. The automatic transmission, while smooth, offered relatively long gear ratios, prioritizing comfort over outright performance. In manual mode, the driver could hold gears longer, accessing more of the engine’s power band. Compared to the 4.4i, the 4.6is felt more eager to rev and offered a more substantial surge of power. While not a dedicated sports car, the 4.6is provided a level of performance unexpected in a vehicle of its size and weight.
Equipment & Trim Levels
The 4.6is came standard with a generous array of features, reflecting its position as the flagship X5 model. Standard equipment included leather upholstery, power-adjustable heated front seats with memory function, automatic climate control, a premium sound system, and xenon headlights. Optional extras included a navigation system, rear-seat entertainment, and upgraded interior trim options. The exterior was distinguished by unique 20-inch alloy wheels, a more aggressive front bumper, and subtle “4.6is” badging. The interior typically featured sport seats with increased bolstering and unique trim accents.
Chassis & Braking
The X5 4.6is utilized a robust chassis with a double wishbone front suspension and an independent multi-link rear suspension. The suspension was tuned to provide a balance between comfort and handling, with slightly firmer damping rates compared to the lower-trim models. Braking duties were handled by ventilated disc brakes at all four corners, with larger rotors than those found on the 3.0i and 4.4i. The 4.6is also featured standard ABS (Anti-lock Braking System) and electronic stability control, enhancing safety and control.
Market Reception & Comparison
The X5 4.6is was generally well-received by automotive critics, who praised its powerful engine, comfortable ride, and luxurious interior. However, its fuel economy was often criticized, averaging around 16 mpg in combined driving. Compared to the 4.4i, the 4.6is offered a substantial performance upgrade but came at a higher price point. The 3.0i, while more fuel-efficient, lacked the power and prestige of the 4.6is. The 4.6is appealed to buyers who prioritized performance and luxury over fuel economy and value.
Legacy
The M62B46 engine, while generally reliable, is known to be susceptible to certain issues, including coolant leaks from the plastic expansion tank and valve stem seal leaks. The automatic transmission, if properly maintained, is also considered durable. Today, the X5 4.6is represents a desirable entry point into the world of high-performance BMW SUVs. Well-maintained examples command a premium in the used car market, appealing to enthusiasts who appreciate its unique combination of power, luxury, and relative rarity. It remains a testament to BMW’s early success in establishing the luxury SUV segment.
