For enhanced safety, the front and middle seat shoulder belts of the Land Rover Discovery have pretensioners to tighten the seatbelts and eliminate dangerous slack in the event of a collision and force limiters to limit the pressure the belts will exert on the passengers. The Infiniti QX80 doesn’t offer pretensioners for the middle seat belts.
Both the Discovery and QX80 have child safety locks to prevent children from opening the rear doors. The Discovery has power child safety locks, allowing the driver to activate and deactivate them from the driver's seat and to know when they're engaged. The QX80’s child locks have to be individually engaged at each rear door with a manual switch. The driver can’t know the status of the locks without opening the doors and checking them.
To provide maximum traction and stability on all roads, All-Wheel Drive is standard on the Discovery. But it costs extra on the QX80.
When descending a steep, off-road slope, the Discovery’s standard Hill Descent Control allows you to creep down safely. The QX80 doesn’t offer Hill Descent Control.
The Land Rover Discovery has Daytime Running Lights to help keep it more visible under all conditions. Canadian government studies show that driving with lights during the day reduces accidents by 11% by making vehicles more conspicuous. The QX80 doesn’t offer Daytime Running Lights.
The Discovery HSE/HSE Luxury’s optional driver alert monitor detects an inattentive driver then sounds a warning and suggests a break. According to the NHTSA, drivers who fall asleep cause about 100,000 crashes and 1500 deaths a year. The QX80 doesn’t offer a driver alert monitor.
For better protection of the passenger compartment, the Discovery uses safety cell construction with a three-dimensional high-strength frame that surrounds the passenger compartment. It provides extra impact protection and a sturdy mounting location for door hardware and side impact beams. The QX80 uses a body-on-frame design, which has no frame members above the floor of the vehicle.
Both the Discovery and the QX80 have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, rearview cameras, available crash mitigating brakes, lane departure warning systems, blind spot warning systems, around view monitors and rear cross-path warning.
The Discovery’s 3.0 turbo V6 diesel produces 30 lbs.-ft. more torque (443 vs. 413) than the QX80’s 5.6 DOHC V8.
On the EPA test cycle the Discovery Td6 gets better fuel mileage than the QX80 AWD (21 city/26 hwy vs. 13 city/19 hwy).
On the EPA test cycle the Discovery Supercharged V6 gets better fuel mileage than the QX80 AWD (16 city/21 hwy vs. 13 city/19 hwy).
For better stopping power the Discovery’s brake rotors are larger than those on the QX80:
For better traction, the Discovery’s optional tires are larger than the largest tires available on the QX80 (285/40R22 vs. 275/60R20).
The Discovery’s optional tires provide better handling because they have a lower 40 series profile (height to width ratio) that provides a stiffer sidewall than the QX80’s optional 50 series tires.
For better maneuverability, the Discovery’s turning circle is 1.2 feet tighter than the QX80’s (40.4 feet vs. 41.6 feet).
For greater off-road capability the Discovery Air Suspension has a 1.9 inches greater minimum ground clearance than the QX80 (11.1 vs. 9.2 inches), allowing the Discovery to travel over rougher terrain without being stopped or damaged.
The Land Rover Discovery may be more efficient, handle and accelerate better because it weighs about 800 to 950 pounds less than the Infiniti QX80.
The Discovery is 1 foot, 1.3 inches shorter than the QX80, making the Discovery easier to handle, maneuver and park in tight spaces.
Unibody construction makes the Discovery’s chassis much stiffer, which contributes to better handling, and enables softer springs to be used for a better ride. Unibody construction’s stiffness also contributes to better durability and less body squeaks and rattles. The QX80 doesn’t use unibody construction, but a body-on-frame design.
The front grille of the Discovery uses electronically controlled shutters to close off airflow and reduce drag when less engine cooling is needed. This helps improve highway fuel economy. The QX80 doesn’t offer active grille shutters.
The Discovery has .1 inches more front headroom, 1.1 inches more third row headroom and 4.7 inches more third row legroom than the QX80.
The Discovery offers an optional rear tailgate seat that can be flipped rearward and used for tailgate picnics. (Do not use seat reversed while vehicle in motion.) The QX80 doesn’t offer a rear tailgate seat.
To make loading groceries and cargo easier when your hands are full, the Discovery’s cargo door can be opened and closed just by kicking your foot under the back bumper, leaving your hands completely free. The QX80 doesn’t offer a hands-free gesture to open its cargo door, forcing you to put cargo down if your hands are full.
Unlike the driver-only memory system in the QX80, the Discovery HSE/HSE Luxury has standard driver and passenger memory, so that when drivers switch, the memory setting adjusts the driver’s seat, steering wheel position (with optional power wheel adjuster) and outside mirror angle and the front passenger seat also adjusts to the new passenger’s preset preferences.
The Discovery HSE/HSE Luxury offers an optional heads-up display which projects speed and navigation instruction readouts in front of the driver’s line of sight, allowing drivers to view information without diverting their eyes from the road. The QX80 doesn’t offer a heads-up display.
The power windows standard on both the Discovery and the QX80 have locks to prevent small children from operating them. When the lock on the Discovery is engaged the driver can still operate all of the windows, for instance to close one opened by a child. The QX80 prevents the driver from operating the other windows just as it does the other passengers.
Heated windshield washer nozzles are optional on the Discovery to prevent washer fluid and nozzles from freezing and help continue to keep the windshield clear in sub-freezing temperatures. The QX80 doesn’t offer heated windshield washer nozzles.
Optional air conditioned the front and second row seats keep the Discovery’s passengers comfortable and take the sting out of hot leather in Summer. The QX80 doesn’t offer air-conditioned seats for the second row.
Standard InControl Apps for the Discovery allows the driver and passengers access to select programs on their smartphones, including playing internet radio stations and other connected activities without taking their eyes off the road or their hands from the wheel. The QX80 doesn’t offer factory integrated smartphone program access.
The Discovery’s optional Park Assist can parallel park or back into a parking spot by itself, with the driver only controlling speed with the brake pedal. The QX80 doesn’t offer an automated parking system.