The Land Rover Range Rover IV (facelift, L405) 3.0 D300, produced from July 2020 to October 2021, represents a significant evolution of the fourth-generation Range Rover. This variant, equipped with a 3.0-liter inline-six diesel engine producing 301 horsepower and incorporating mild hybrid technology, occupied a key position in the Range Rover lineup, offering a balance of performance, refinement, and efficiency. It was positioned as a mid-to-upper tier offering, appealing to buyers seeking substantial power and capability without the outright expense of the higher-specification petrol or larger diesel engines. The facelift brought updated styling, improved technology, and enhanced comfort features to the already luxurious Range Rover platform.
Technical Specifications
| Brand | Land Rover |
| Model | Range Rover |
| Generation | Range Rover IV (facelift 2017) |
| Type (Engine) | 3.0 D300 (301 Hp) Mild Hybrid AWD Automatic |
| Start of production | July, 2020 |
| End of production | October, 2021 |
| Powertrain Architecture | MHEV (Mild Hybrid Electric Vehicle) |
| Body type | SUV |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption at Low speed (WLTP) | 13.4-14.1 l/100 km (17.6 – 16.7 US mpg) |
| Fuel consumption at Medium speed (WLTP) | 7.9-8.6 l/100 km (29.8 – 27.4 US mpg) |
| Fuel consumption at high speed (WLTP) | 7-7.7 l/100 km (33.6 – 30.5 US mpg) |
| Fuel consumption at very high speed (WLTP) | 8.5-9.2 l/100 km (27.7 – 25.6 US mpg) |
| Combined fuel consumption (WLTP) | 8.6-9.3 l/100 km (27.4 – 25.3 US mpg) |
| CO2 emissions (WLTP) | 225-243 g/km |
| Fuel consumption (economy) – urban (NEDC) | 10.7-10.9 l/100 km (22 – 21.6 US mpg) |
| Fuel consumption (economy) – extra urban (NEDC) | 6.1-6.3 l/100 km (38.6 – 37.3 US mpg) |
| Fuel consumption (economy) – combined (NEDC) | 7.8-7.9 l/100 km (30.2 – 29.8 US mpg) |
| CO2 emissions (NEDC) | 205-209 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 7.4 sec |
| Acceleration 0 – 62 mph | 7.4 sec |
| Acceleration 0 – 60 mph | 7 sec |
| Maximum speed | 209 km/h (129.87 mph) |
| Emission standard | Euro 6d-TEMP-EVAP-ISC |
| Weight-to-power ratio | 7.6 kg/Hp |
| Weight-to-torque ratio | 3.5 kg/Nm |
| Power | 301 Hp @ 4000 rpm |
| Torque | 650 Nm @ 1500-2500 rpm (479.42 lb.-ft.) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | Ingenium / DT306 |
| Engine displacement | 2997 cm3 (182.89 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | Inline |
| Cylinder Bore | 83.01 mm (3.27 in.) |
| Piston Stroke | 92.33 mm (3.64 in.) |
| Compression ratio | 15.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine oil capacity | 6 l (6.34 US qt | 5.28 UK qt) |
| Coolant | 8.93 l (9.44 US qt | 7.86 UK qt) |
| Kerb Weight | 2275 kg (5015.52 lbs.) |
| Max. weight | 3150 kg (6944.56 lbs.) |
| Max load | 875 kg (1929.04 lbs.) |
| Trunk (boot) space – minimum | 900 l (31.78 cu. ft.) |
| Trunk (boot) space – maximum | 2190 l (77.34 cu. ft.) |
| Fuel tank capacity | 86 l (22.72 US gal | 18.92 UK gal) |
| Max. roof load | 100 kg (220.46 lbs.) |
| Permitted trailer load with brakes (12%) | 3500 kg (7716.18 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 150 kg (330.69 lbs.) |
| Length | 5000 mm (196.85 in.) |
| Width with mirrors folded | 2073 mm (81.61 in.) |
| Width including mirrors | 2220 mm (87.4 in.) |
| Height | 1869 mm (73.58 in.) |
| Wheelbase | 2922 mm (115.04 in.) |
| Front track | 1693 mm (66.65 in.) |
| Rear (Back) track | 1685 mm (66.34 in.) |
| Ride height (ground clearance) | 220-297 mm (8.66 – 11.69 in.) |
| Minimum turning circle | 12.7 m (41.67 ft.) |
| Front brakes | Ventilated discs, 363 mm |
| Rear brakes | Ventilated discs, 350 mm |
| Number of gears | 8 |
| Type of gearbox | automatic transmission |
INTRODUCTION
The Land Rover Range Rover IV (L405) underwent a significant facelift in 2017, bringing with it updated styling, enhanced technology, and a revised engine lineup. The 3.0 D300 variant, introduced in 2020, utilized the Ingenium engine family, a modular engine design developed in-house by Jaguar Land Rover. This engine combined strong performance with improved fuel efficiency and reduced emissions, thanks in part to its mild hybrid system. The D300 sat comfortably within the Range Rover range, offering a compelling alternative to the more expensive and powerful SDV8 and petrol options, while providing a noticeable step up in performance from the lower-powered D200 and D275 models. It was primarily sold in European and Asian markets, with limited availability in North America where larger engines were preferred.
Powertrain & Engine Architecture
The heart of the D300 is the Ingenium DT306, a 2997cc inline-six cylinder diesel engine. This engine features a sophisticated diesel commonrail fuel injection system, delivering precise fuel metering for optimal combustion. The engine boasts a high compression ratio of 15.5:1, contributing to its efficiency. The mild hybrid system, utilizing a 48V electrical architecture, incorporates a Belt-integrated Starter Generator (BiSG). This system allows for smoother start-stop operation, regenerative braking, and a small amount of electric assistance during acceleration, improving fuel economy and reducing emissions. The engine produces 650 Nm (479.42 lb.-ft.) of torque between 1500 and 2500 rpm, providing strong pulling power across a wide rev range. The engine is longitudinally mounted at the front of the vehicle. The eight-speed automatic transmission, sourced from ZF, is known for its smooth shifting and wide gear ratios, contributing to both performance and efficiency.
Driving Characteristics
The 3.0 D300 offers a refined and capable driving experience. While not as overtly powerful as the larger V8 engines, the D300 provides ample performance for everyday driving and long-distance cruising. The mild hybrid system helps to eliminate turbo lag, resulting in a responsive throttle response. The eight-speed automatic transmission shifts smoothly and efficiently, and the gear ratios are well-suited to both on-road and off-road driving. Compared to the D275, the D300 offers a noticeable increase in power and torque, resulting in quicker acceleration and improved overtaking ability. While a manual transmission was not offered on this variant, the automatic transmission provides a seamless and convenient driving experience. The Range Rover’s air suspension provides a comfortable ride, even on rough surfaces.
Equipment & Trim Levels
The Range Rover IV (facelift) 3.0 D300 typically came well-equipped as standard. Features included leather upholstery, heated front seats, a touchscreen infotainment system with navigation, climate control, and a suite of safety features such as lane departure warning and autonomous emergency braking. Optional extras included a panoramic sunroof, upgraded audio systems (Meridian), adaptive cruise control, and a variety of interior trim options. Higher trim levels offered more luxurious appointments, such as quilted leather, executive rear seating, and advanced driver-assistance systems. The exterior styling could be customized with various wheel designs and paint colors.
Chassis & Braking
The Range Rover IV utilizes a robust aluminum monocoque chassis, providing a strong and lightweight foundation. The suspension system features air suspension with electronic dampers, offering adjustable ride height and damping rates. This allows the vehicle to adapt to various driving conditions and maintain a comfortable ride. The D300 variant typically came equipped with ventilated disc brakes on all four wheels, providing ample stopping power. The braking system is assisted by ABS (Anti-lock Braking System) and electronic brake-force distribution. Stabilizer bars are fitted to both the front and rear axles to reduce body roll during cornering.
Market Reception & Comparison
The Range Rover IV (facelift) 3.0 D300 was generally well-received by automotive critics. It was praised for its refined driving experience, comfortable interior, and strong performance. Fuel economy was considered respectable for a vehicle of its size and capability. Compared to the D275, the D300 offered a worthwhile performance upgrade, while remaining more affordable than the SDV8. However, some critics noted that the engine could be somewhat noisy under hard acceleration. The mild hybrid system was seen as a positive step towards improving fuel efficiency and reducing emissions.
Legacy
The Ingenium engine family, including the DT306 found in the D300, has proven to be a reliable and durable powertrain. While long-term reliability data is still accumulating, early reports suggest that the engine is generally robust. The mild hybrid system has also proven to be relatively trouble-free. On the used car market, the Range Rover IV (facelift) 3.0 D300 represents a good value proposition, offering a luxurious and capable SUV at a more accessible price point than the higher-specification models. Regular maintenance, including oil changes and filter replacements, is crucial to ensure the longevity of this powertrain. The D300’s blend of performance, refinement, and efficiency has cemented its place as a popular choice among Range Rover enthusiasts.
