Standard features include leather seating and trim, dual-zone climate control, eight-way power seats, a multi-function steering wheel, cruise control, power windows, power mirrors, power locks, power tailgate, HomeLink, AM/FM/CD/MP3 audio with an auxiliary jack and iPod compatibility. The 7-Seat Comfort Package ($1,150) adds second- and third-row flat-folding seats, a third-row side-curtain air bag, map lights and accessory power outlet, a luggage net, and rear air conditioning with separate controls.

The HSE Package ($3,650) upgrades with 19-inch alloy wheels, front and rear park distance control, heated front and rear seats, satellite navigation, a driver information center of off-roading, Sirius satellite radio, and Bluetooth wireless connectivity. The HSE and 7-Seat Comfort Package ($4,800) offers the same features with seven-seat capacity and the associated air bags.

Option packages: HSE Plus ($4,760) adds digital radio, mood lighting, keyless entry and a rear parking camera; also available with 7 Seat Comfort Package ($5,910). The HSE Lux package ($9,565) with 7 Seat Comfort upgrades to premium leather, bi-xenon headlamps, adaptive front lighting, a center console cooler box, a 480-watt Harmon Kardon Logic7 AM/FM/CD with 14 speakers, and driver memory for seat, column and mirrors; the HSE Lux Plus package ($11,115) adds a five-camera surround camera system.

Standalone options: Cold Climate package ($1400) adds heated windshield, heated front and rear seats with three and two heat ranges, respectively, heated windshield washer jets, and a heated steering wheel. A Heavy Duty Package ($750) adds a full-size spare wheel and tire and an active locking rear differential. A rear seat entertainment system ($2500) adds dual screens, a six-disc DVD changer, wired headphones, input jacks and a remote control. There are extra-cost paints, ranging from $400 to $950, and 20-inch tires and wheels for $2500. The combinations are endless, allowing a customer to pretty much create his or her own bespoke LR4.

Safety equipment standard on all models includes front, side and roof air bags, ABS brakes, traction control, yaw control, and four-wheel drive.

This time out, the grille has two bars instead of one, and they are perforated. The third side window stops at the same level on the bodyside as the first and second windows, instead of wrapping up and over the roof sheetmetal.

Where the LR3 had narrow fender flares front and rear, the LR4 has wider ones that Land Rover says reduce aerodynamic lift at the front by a full 50 percent. Where the front fenders of the LR3 were solid sheetmetal, the LR4 carries front fender vents that do not carry turn signal repeaters, similar to but not the same as the more expensive Range Rover Sport that uses repeaters in the side vents. The LR4 has new LED lamps front and rear, with the headlamps using the same diagonally staggered lamp positions as the LR3.

The LR4 has an interesting setup in the second row, with a 35/30/35 three-section split folding rear seat that folds flat, and can be folded down in three-row versions to afford limousine-like rear seat leg room, or accommodate large cargoes and people simultaneously.

During our test drive in Scotland we found the new LR4 interior design much less vertical, dark and plasticky than that of the LR3's, with much better materials, beautifully fitted and finished. Underway, it's very comfortable and very quiet, considering that the LR4 is quite a big box that catches lots of air and rides on enormous tires. The front-row power seats are beautifully stitched, supportive and comfortable. The thick multi-function steering wheel mounts a complete set of controls for audio, telephone and cruise control. The center stack has been completely redesigned to be easier to read and use. The interior redesign in the LR4 is a complete success in terms of comfort, luxury and utility.

The new optional surround camera system uses five cameras, two facing forward, one on either side of the truck facing down, and one at the rear to give a near-360-degree view of surroundings. Camera views can be selected from the main nav screen, and the view can be zoomed if necessary. This feature was developed to assist drivers in trailer hookups and trailer maneuvering, as well as for checking all-around clearances and terrain when driving off-road. This useful and fun camera feature is only available in off-road mode, in order the keep the driver's eyes from wandering off the highway.

The first purpose-built engine designed specifically for a Land Rover application, the new engine has been substantially improved compared to the Jaguar design to make it ready for serious off-road use. The LR4 engine uses a deeper oil pan to maintain engine lubrication at high lean angles when off-road. Every electric motor, pulley and bearing, the starter, alternator and air conditioning compressor, have been waterproofed.

The improved ZF six-speed transmission shifts very quickly and quietly, up or down. Opt for the Supercharged model and you get an LR4 mode added to the transmission along with paddle shifters on the steering wheel. Neither of these features was present on our test truck, but we didn't miss them.

Although still based on electronically controlled air springs and shock absorbers, the chassis under the LR4 has been given a thorough redesign that gives it much sharper handling and far less body roll in corners, sharper steering response, and even smoother on-road ride quality.

The Terrain Response system menu has a new Dynamic Response program added to the menu, specifically to tune the suspension for high-performance road use. In this mode, the body is lowered and the shocks stiffened. There is very little body roll for a hefty truck that rides this high off the ground and has a high center of gravity, and the air suspension system combines with the big tires to yield a quiet, smooth ride even in severe off-road conditions. Hill Descent Control is standard, and there are additional settings in the system for rock crawling and sand driving. Modifications to the front suspension have made the steering response crisper as well.

Brakes on the HSE have been upgraded to the Range Rover Sport's larger 14.2-inch ventilated front discs and four-piston calipers, with 13.8-inch ventilated rear discs and twin-piston calipers. The larger, quieter brakes perform very well, even when driving through water that covers them completely. The brakes are also tied into the standard dynamic stability control system and the Roll Stability Control system to keep the truck on its intended path if and when cornering speeds are too high for conditions.

The LR4 offers its driver a wide choice of driving modes at the flick of the console-mounted Terrain Response wheel, with settings for general driving; grass/gravel/snow; sand; mud and ruts; and rock crawling. The sand setting has been revised for minimal wheelspin, and the rock crawling mode has quicker responses to lost traction in the LR4. Hill Descent Control, pioneered by Land Rover, has been sharpened as well, and is controlled by a separate console button.

The LR4 is possessed of amazing off-road capabilities over every kind of terrain and can slog through almost 28 inches of water. But its new on-road behavior is a surprising and wonderful mix of luxury, quietness, and serenity. If you come upon a surprise, the chassis and brakes and those big tires will handle it. If you find a challenge in the middle of a corner, the LR4 takes it on with a minimum of fuss and very little body roll. The redesigned cockpit, display screen and instrument panel make it a completely different animal than the starker, darker LR3.

Jim McCraw filed this report to NewCarTestDrive.com after his test drive of the LR4 near Charter Hall, Scotland.