Land Rovers have long had diesel engines beneath their engine bays, yet thanks to negative public opinion of diesels and the stringent emissions standards, the compression-ignition engines were never offered in the U.S. – that is, until now. Land Rover has announced its plans to bring its Td6 V-6 turbodiesel to the States inside both the Range Rover and the Range Rover Sport.

The move comes amidst a changing marketplace that is becoming more accepting of diesels and their advantages, and the improvement of emissions and exhaust treatment system.

Though the diesel engine is new for the U.S., the Range Rover it powers is not. Its last redesign came in 2013 when Jaguar Land Rover moved the full size SUV to a lightweight aluminum chassis. A new outward design carries many cues from classic Range Rovers while incorporating plenty of new style. The interior was fitted with the same treatment while getting an upgrade in materials and quality.

The 2016 Range Rover Td6 will still retain its legendary off-road prowess thanks to its Terrain Response system, dynamic suspension, and unsurpassed water fording depth. In fact, the new torquey diesel should only strengthen the Range Rover’s abilities off the beaten path.

Improvements are of course made to the Range Rover’s fuel efficiency and overall driving range. Compared to the gasoline V-6, the diesel offers a 32-percent improvement to fuel efficiency, bringing the estimated mpg numbers to 22 city, 28 highway, and 25 combined mpg. Total driving distance for one tank of fuel is extended to a bladder-busting 658 miles.

Click past the jump for the full review

  • 2016 Land Rover Range Rover Td6
  • Year:
    2016
  • Make:
  • Model:
  • Engine:
    V6
  • Transmission:
    8-speed electronically controlled automatic
  • Horsepower @ RPM:
    254
  • Torque @ RPM:
    440 @ 1750
  • Energy:
    turbodiesel
  • Displacement:
    3.0 L
  • 0-60 time:
    7.4 sec.
  • Top Speed:
    130 mph
  • Price:
    85000 (Est.)
  • Price:
  • car segment:
  • car fuel:
  • body style:

Exterior

2014 Range Rover Autobiography - Driven High Resolution Exterior
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2014 Range Rover Autobiography - Driven High Resolution Exterior
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2016 Land Rover Range Rover Td6 High Resolution Exterior
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Despite the new diesel, the Range Rover still wears the same exterior. That’s not a bad thing, though. The SUV is one of the classiest and best dressed in the segment. Its character lines hark back to its historical past while still looking modern and vogue. A high-mounted air intake integrated into the hood affords the Range Rover its 35-inch fording dept, while extra seals in the door jams keep water out.

Interior

2014 Range Rover Autobiography - Driven High Resolution Interior
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Supercharged V-8 Autobiography shown
Like the outside, things inside are very familiar. Things, however, are slightly different. A new acoustic windshield has been added along with more sound absorbing insulation. The new materials ensure no extra noise emanates into the leather-lined cabin.

In fact, Land Rover boasts the diesel engine is so smooth and the sound materials so absorbent, that participants in several test-drive clinics had no idea they were driving diesels during the 30-minute test loops.

Drivetrain

2014 Range Rover Autobiography - Driven High Resolution Exterior
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Supercharged V-8 Autobiography shown
And now for the news. The all-new 3.0-liter V-6 turbodiesel is constructed from Compact Graphite Iron with a deep-skirted, cross-bolted design that includes a structural, one-piece aluminum oil sump. The combination gives the block added strength and lightness over aluminum and conventional iron blocks, respectively. The block’s strength allows for a more compact design within the engine bay.

Scrubbing the exhaust is a Selective Catalytic Reduction system that uses Diesel Exhaust Fluid (DEF) to reduce NOx levels, helping the engine pass the U.S.’ strict LEV 3 requirements. Helping increase efficiency is a new Low Pressure EGR system that recirculates lower pressure exhaust gasses picked up after the DEF filter and sends it to the turbocharger inlet. The result is cooler air coming into the engine and therefore increased efficiency. A variable pressure oil pump also contributes to the cause.

All told, the turbodiesel produces 254 horsepower and 440 pound-feet of torque. As with all diesels, torque is the big factor. In this case, peak torque comes in at a low 1,750 rpm. That helps the diesel lay down similar 0-to-60 times as the gasoline V-6. Land Rover says the diesel pushes the SUV to 60 mph in 7.4 seconds – just three tenths slower than the gasser.

Land Rover estimates the diesel-powered Range Rover to achieve 22 mpg city, 28 mpg highway, and 25 mpg combined. That represents a 32 percent improvement over the gasoline V-6’s fuel economy numbers. The SUV’s total range is extended another 3.3 percent, totaling 658 miles between fill-ups.

Drivetrain Specifications

Engine Longitudinal V6, 24 valve, four OHC, direct injection diesel, single turbocharger
Displacement 2993 cc (182.6 cu. In.)
Bore x Stroke 84.0 x 90.0 mm
Valvetrain DOHC / 4 valves per cylinder
Emissions US LEV III
Maximum Power 254hp
Maximum Torque 440 lb-ft @ 1,750 rpm
Transmission ZF® 8-speed electronically controlled automatic transmission with CommandShift™ (Normal, Sport and Manual shift modes); locking torque converter
EPA Estimated Fuel Economy 22 mpg city / 28 mpg highway (25 mpg combined)
Fuel Tank Capacity 23.5 gallons
Maximum Range 658 miles
0-60 mph 7.4 seconds
Top Speed 130mph

Prices

2016 Land Rover Range Rover Td6 High Resolution Exterior
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Land Rover has not released pricing information as of this writing, but expect to pay a premium for the diesel Range Rover. The standard Range Rover carries a base price of $83,495.

Competition

Mercedes-Benz GL350 BlueTEC

2013 Mercedes GL-Class Exterior AutoShow
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The Mercedes GL350’s diesel offers up some similar stats as the Range Rover’s. The 3.0-liter turbodiesel puts out 240 horsepower and 455 pound-feet of torque while getting 26 mpg highway. Through not rated as high as the Range Rover’s V-6 on the highway, the Mercedes does cost significantly less. Starting prices begin at $63,600.

Of course, if off-roading is a priority, the Range Rover has the Mercedes beat.

Porsche Cayenne Diesel

2013 Porsche Cayenne Diesel High Resolution Exterior
- image 446612

Porsche has been on the diesel bandwagon in the U.S. for a while now. Like the Range Rover and Mercedes, the Cayenne is powered by a 3.0-liter turbodiesel that makes 240 horsepower. Torque falls short at 406 pound-feet, but it’s still enough to get the Porsche to 60 in 7.1 seconds.

The Porsche also undercuts the Range Rover by a significant amount, starting at $61,700.

Conclusion

2014 Range Rover Autobiography - Driven High Resolution Exterior
- image 555892

Supercharged V-8 Autobiography shown
It seems as if automakers are finally warming up to bringing more diesel engines to the U.S. The debate will still rage on regarding the return on investment for diesel buyers, but often times, the benefits outweigh any nominal financial losses over the course of ownership. Towing prowess, extra torque for off-roading, and an extended total range are three of the main benefits customers will reap.

The Range Rover diesel will go on sale Fall 2015.

  • Leave it
    • * Will likely be an expensive option
    • * Will U.S. Range Rover buyers go diesel?

Press Release

Land Rover will offer consumers the option of fuel efficient diesel powertrains in two 2016 model year luxury SUVs, the Range Rover and Range Rover Sport. The Range Rover Td6 and Range Rover Sport Td6 SUVs will deliver 25 miles per gallon combined, a 32 percent improvement over the supercharged V6, and reach a high of 28 miles per gallon on the highway.

2016 Land Rover Range Rover Td6 High Resolution Exterior
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The two new luxury diesel SUVs debuted at the 2015 North American International Auto Show and go on sale Fall 2015.

Land Rover has employed a combination of new and proven innovative technologies to bring North American customers an engine with exceptional refinement, efficiency and performance.

The 3.0-liter Td6 turbocharged V6 diesel engine delivers effortless performance thanks to 254 horsepower and a low-end torque output of 440 lb-ft. Peak torque arrives at 1,750rpm in the Td6 while the gasoline V6 produces its 332 lb-ft (450 Nm) at 3,500 rpm. This high torque output at low RPM, makes the diesel Range Rover and Range Rover Sport models particularly well suited to towing heavy loads and off-roading where reaching maximum torque at low RPM is extremely beneficial.

Similarly, the low-end torque of the Td6 allows the vehicles to deliver 0-60 acceleration times comparable to the higher horsepower V6 gasoline models. The Range Rover Sport Td6 and Range Rover Td6 accelerate from 0-60mph in 7.1 and 7.4 seconds respectively, compared to 6.9 and 7.1 seconds for gasoline V6 models.

Preliminary fuel economy figures for the Range Rover Sport and Range Rover of 22 mpg (city), 28 mpg (highway) and 25 mpg (combined) represent significant gains over traditional gasoline alternatives. The combined figure equates to a 32 percent improvement over the gasoline V6 engine. Total range increases to 658 miles, a gain of 8.0% for the Range Rover Sport and 3.3% for the Range Rover.

These improvements underline a dedication to meeting and exceeding the expectations of luxury SUV consumers. Both the Range Rover and Range Rover Sport have seen significant advancement in fuel efficiency, safety, and design. As part of a complete model redesign for the 2013 and 2014 model years, the Range Rover and Range Rover Sport respectively, have moved to all-aluminum platforms, gained the option of V6 engines and have had significant design changes in an effort to continuously improve Land Rover product offerings. With the addition of Td6, we are advancing these vehicles even further.

Designed from the ground up, the Td6 provides efficiency and refinement. Its block is constructed using Compacted Graphite Iron (CGI), which has a higher tensile strength than standard grey cast iron, better fatigue strength than aluminum, and added stiffness. Its overall advantages in weight and strength mean the block can be lighter and smaller which make it compact in size. The deep-skirted, cross-bolted design and one-piece structural aluminum oil sump of the Td6 help the engine to absorb combustion noise effectively which improves refinement.

Prior to its introduction in the US, improvements have been made to the Td6 helping to achieve an additional eight percent increase in overall fuel efficiency. These include the addition of a water-cooled turbocharger for maximum performance and durability at high operating temperatures; and new ball bearings, vanes and nozzles to improve efficiency.

A Selective Catalytic Reduction (SCR) system uses Diesel Exhaust Fluid (DEF) to reduce NOx emissions, ensuring the Td6 achieves US LEV 3 status. The DEF is injected into the exhaust and, as the resulting mixture passes through the SCR, NOx is turned into harmless nitrogen gas.

The reservoir for the DEF is located in two areas, the main is under the floor with the secondary located under the hood. Combined they hold enough fluid for approximately 10,000 miles. Diesel exhaust fluid is commercially available and owners can top the fluid level up themselves or take it to their nearest Land Rover dealer if the reservoir needs replenishing.

In addition to the cleansing efficiency of the SCR, every aspect of the Td6 engine has been optimized to ensure emissions are as low as possible. This includes the new Low Pressure EGR system which has been critical to success of Td6 emission ratings and further improves fuel economy.

Unlike traditional High Pressure EGR systems, which recirculate gases directly from the exhaust manifold to inlet manifold at high pressure, the revised design takes gases at low pressure - after the DPF filter in the exhaust pipe - and feeds them back to the turbocharger inlet. From here they pass through an intercooler, resulting in a lower peak combustion temperature.

The higher the peak combustion temperature, the more NOx is produced, so the low pressure EGR system has the effect of reducing the harmful emissions contained by exhaust gases, by lowering the peak combustion temperature and improving efficiency.

Elsewhere, a two-stage oil pump reduces engine losses while a revised design for the fuel-injectors has been introduced to improve efficiency and reduce hydrocarbon emissions. The injection cycle also employs an innovative two-stage process to eliminate the traditional ’knock’ associated with diesel engines.

Attention to detail ensures diesel derivatives deliver traditional Range Rover refinement. Innovative dual-isolation engine mounts, as well as windshields featuring a special acoustic laminate, help reduce noise levels. Refinement on Range Rover models is further enhanced by the design of the bulkhead between the engine and vehicle interior, which minimizes the transmission of engine noise into the cabin.

The fuel filler neck on diesel Land Rover vehicles is fitted with a misfueling protection device. This device will prevent the narrower gasoline fuel nozzle fitted to gasoline pumps from being inserted into the filler neck on the vehicle, reducing the likelihood of adding the wrong fuel.

Tested and Proven in the USA

2016 Land Rover Range Rover Td6 High Resolution Exterior
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The latest Td6 diesel has been tested extensively to ensure it meets the expectations of US buyers. Early in the development process Land Rover conducted test drive clinics with premium SUV buyers to determine whether customers would notice a difference between the driving feel of diesel versus gasoline models.

Without informing participants that they’d be driving diesel models, the Land Rover team gathered feedback using in-vehicle video and audio recordings, data loggers and post-drive interviews. The results of the program were conclusive; consumers participating in testing clinics in major US cities could not identify if they were driving a diesel vehicle during a 30-minute test drive.

Land Rover engineers embarked on US testing schedule to ensure the new diesel engine could handle all US climate and terrain conditions. By the time US sales have begun, the test fleet will have completed one million test miles.

The test fleet has targeted the most extreme climates and diverse terrains imaginable across the US. The new Range Rover and Range Rover Sport diesel have navigated from sea level to altitudes of 14,000 feet during the grueling test program. To meet the unique demands of the North American climate, engineers have undertaken testing year round, from the coldest winter days in Minnesota, to summertime in the deserts of the Southwest.

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