The Land Rover Discovery IV 5.0 V8 (375 Hp) AWD Automatic, produced between 2009 and 2013, represents a significant evolution in the Discovery lineage. This fourth generation of the Discovery, designated the 4th generation (L494 chassis code), moved away from the traditional body-on-frame construction of its predecessors to a more modern monocoque chassis. Positioned as the flagship engine option, the 5.0-liter V8 offered a substantial performance upgrade over the available diesel and smaller gasoline engines, targeting buyers who prioritized power and refinement in a capable SUV. It was a key model in Land Rover’s strategy to broaden the Discovery’s appeal, attracting customers seeking a premium experience alongside the brand’s renowned off-road prowess.
Technical Specifications
| Brand | Land Rover |
| Model | Discovery |
| Generation | Discovery IV |
| Type (Engine) | 5.0 V8 (375 Hp) AWD Automatic |
| Start of production | 2009 |
| End of production | 2013 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 5-7 |
| Doors | 5 |
| Fuel consumption (combined) | 13.9 l/100 km (16.9 US mpg, 20.3 UK mpg, 7.2 km/l) |
| CO2 emissions | 328 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 7.9 sec |
| Acceleration 0 – 62 mph | 7.9 sec |
| Acceleration 0 – 60 mph | 7.5 sec |
| Maximum speed | 195 km/h (121.17 mph) |
| Emission standard | Euro 5 |
| Power | 375 Hp @ 6500 rpm |
| Power per litre | 75 Hp/l |
| Torque | 510 Nm @ 3500 rpm (376.16 lb.-ft. @ 3500 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | AJ133 |
| Engine displacement | 5000 cm3 (305.12 cu. in.) |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Cylinder Bore | 92.5 mm (3.64 in.) |
| Piston Stroke | 93 mm (3.66 in.) |
| Compression ratio | 11.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | DIVCT |
| Engine oil capacity | 8 l (8.45 US qt | 7.04 UK qt) |
| Coolant | 17 l (17.96 US qt | 14.96 UK qt) |
| Fuel tank capacity | 86.3 l (22.8 US gal | 18.98 UK gal) |
| Permitted trailer load with brakes (12%) | 3500 kg (7716.18 lbs.) |
| Length | 4829 mm (190.12 in.) |
| Width with mirrors folded | 2022 mm (79.61 in.) |
| Width including mirrors | 2176 mm (85.67 in.) |
| Height | 1887 mm (74.29 in.) |
| Wheelbase | 2885 mm (113.58 in.) |
| Front track | 1605 mm (63.19 in.) |
| Rear (Back) track | 1613 mm (63.5 in.) |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 6 gears, automatic transmission |
| Front suspension | Double wishbone |
| Rear suspension | Double wishbone |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
Powertrain & Engine Architecture
At the heart of the Discovery IV 5.0 V8 lies the AJ133 engine, a naturally aspirated 5.0-liter V8 gasoline engine. This engine, developed by Jaguar Land Rover, features direct fuel injection and variable valve timing (DIVCT) on both intake and exhaust camshafts. The direct injection system optimizes fuel delivery for improved efficiency and power output. The engine’s architecture is a 90-degree V configuration, contributing to a smooth and balanced operation. The 6-speed automatic transmission, sourced from ZF, was specifically calibrated to handle the V8’s substantial torque output. This transmission offered smooth shifts and a responsive driving experience, although it lacked the efficiency of more modern 8 or 9-speed automatics.
Driving Characteristics
The 5.0-liter V8 transformed the Discovery IV’s driving experience. With 375 horsepower and 376 lb-ft of torque, acceleration was brisk, achieving 0-60 mph in approximately 7.5 seconds. Compared to the 3.0-liter SDV6 diesel, the V8 offered significantly more immediate power and a more refined engine note. While the diesel excelled in fuel economy and low-end torque, the V8 provided a more engaging and spirited driving experience. The automatic transmission, while smooth, wasn’t particularly quick to downshift, and the overall gearing was tuned for comfortable cruising rather than outright performance. The all-wheel-drive system, a Land Rover hallmark, provided excellent traction in various conditions, making the Discovery IV a capable on- and off-road vehicle.
Equipment & Trim Levels
The 5.0 V8 typically came in the higher trim levels of the Discovery IV range, such as the HSE and Autobiography. Standard equipment included leather upholstery, heated front seats, a premium audio system, and a touchscreen infotainment system. Optional extras included adaptive cruise control, a panoramic sunroof, rear seat entertainment, and upgraded interior trim materials. The Autobiography trim, in particular, offered a luxurious experience with features like semi-aniline leather, wood veneer trim, and a host of convenience features. The interior design focused on practicality and comfort, with ample space for passengers and cargo.
Chassis & Braking
The Discovery IV’s monocoque chassis provided a solid foundation for its capabilities. The suspension system utilized double wishbones at both the front and rear, offering a comfortable ride and good handling characteristics. The V8 models typically featured upgraded suspension components to handle the increased weight and power. Braking duties were handled by ventilated discs on all four wheels, coupled with an anti-lock braking system (ABS) and electronic brake-force distribution. While the braking performance was adequate for the vehicle’s weight, it wasn’t particularly sporty. The steering system employed an electric power steering rack, providing a light and precise steering feel.
Market Reception & Comparison
The Discovery IV 5.0 V8 received generally positive reviews, with critics praising its powerful engine, comfortable ride, and off-road capability. However, its fuel economy was a common criticism, with the 16.9 US mpg combined figure being significantly lower than that of the diesel models. Compared to rivals like the BMW X5 and Mercedes-Benz ML-Class, the Discovery IV offered a unique blend of luxury, practicality, and off-road prowess. The V8 variant appealed to buyers who prioritized performance and refinement over fuel efficiency, and it represented a significant step up in terms of driving experience compared to the lower-powered models.
Legacy
The Land Rover Discovery IV 5.0 V8 remains a desirable vehicle in the used car market, particularly for those seeking a capable and luxurious SUV with a powerful engine. While the AJ133 V8 engine is generally reliable, regular maintenance is crucial to prevent potential issues. Common concerns include oil leaks and cooling system problems. The 6-speed automatic transmission, while robust, may require servicing at higher mileages. Despite its age, the Discovery IV 5.0 V8 continues to offer a compelling combination of performance, comfort, and off-road capability, making it a popular choice for enthusiasts and those seeking a distinctive SUV.
