The question is which one the most off-road car in the world, has been causing heated debate among car enthusiasts for decades. Some call it legendary Mercedes-Benz G-Class, others lean towards utilitarian Land Rover Defender, and still others remember Soviet all-terrain vehicles that could overcome where a tank would get stuck. The concept of cross-country ability is multifaceted: it includes not only ground clearance and all-wheel drive, but also geometric parameters, traction at low speeds and reliability of components.
There is no single standard, since operating conditions can differ radically. For swampy taiga you need one type of equipment, for rocky mountains - another, and for sand dunes - a third. In this article, we will analyze the technical aspects that allow the car to be considered unsinkable, and find out which of the contenders is worthy of the title of absolute leader.
It is worth noting that official record holder of the Guinness Book of Records for the maximum conquered height is a specially trained Mercedes-Benz Unimog, reaching a height of 6682 meters. However, this does not make it the most passable in the everyday sense, since serial SUVs solve other problems. Let's look into the details.
Criteria for absolute cross-country ability: what is more important than power?
Many people mistakenly believe that cross-country ability directly depends on the horsepower under the hood. In fact, to overcome serious off-road conditions it is more important torque, available at low speeds. It is traction that allows the wheels not to slip in the mud, but to slowly and confidently rake the car out of the trap. A powerful engine without the right transmission is powerless here.
The key element is availability downshift in the transfer case. It allows you to increase the torque on the wheels several times, sacrificing speed for traction. Without this unit, even the most modern all-wheel drive crossover will turn into a loaded trailer when trying to climb a steep slope or overcome a deep ford.
⚠️ Attention: Installing huge wheels without a suspension lift and replacing the main pairs in the axles can lead to rapid failure of the transmission. Do not upset the engineering balance of the car.
Also, we must not forget about geometric cross-country ability. The angles of approach, departure and ramp determine whether the bumper will catch on a stump or whether the car will sit on its “belly” at the crest of the rut. The leaders here are vehicles with short overhangs and high-mounted units.
Serial legends: who is the king among the available ones?
If we talk about cars that can be bought in a showroom or found on the secondary market, then the list of leaders will look different than in the prototype category. They rule the roost here Jeep Wrangler, Toyota Land Cruiser 70 and Nissan Patrol. These cars are designed to withstand extreme conditions and have a frame construction.
Occupies a special place Land Rover Defender first generations. Its permanent all-wheel drive and long-travel suspension work wonders on a diagonal ride. However, the complexity of maintenance and the tendency to corrosion force many to choose simpler and “clumsier” analogues.
- 🚙 Toyota Land Cruiser 70 Series - a standard of reliability used by UN humanitarian missions in the most dangerous places on the planet.
- 🚙 Jeep Wrangler Rubicon — has best-in-class cornering angles and factory axle locks.
- 🚙 Mercedes-Benz G-Class — three differentials with forced locking allow him to get out of almost any trouble.
It is important to understand that production vehicles are often limited to civilian tires. Replacing standard tires with specialized ones Mud Terrain or Extreme Terrain instantly increases the cross-country ability of any of the listed vehicles by 50-70%.
When choosing an SUV for actual use, pay attention to the availability of spare parts in your region. An exotic Jeep could turn into a monument if a rare power steering hose breaks.
Unique all-terrain vehicles: when there is no road at all
There is a class of equipment that stands apart from the usual jeeps. These are all-terrain vehicles on low-pressure tires, such as the Soviet TREKOL or Swedish Hägglunds Bandvagn 206. Their maneuverability is determined not so much by ground clearance as by low ground pressure. They float through the swamp like ships and do not fall into deep snow.
For such cars the concept of “road” is absent. They are able to cross water obstacles by swimming, using the rotation of the wheels as propulsion. In tundra or taiga conditions, where there are no bridges or hard surfaces, this is the only possible technique.
⚠️ Attention: The operation of all-terrain vehicles on low-pressure tires on hard asphalt roads is prohibited or severely limited due to the rapid wear of the track or tires.
An interesting example is Percheron or various modifications of "Karakats". These homemade or small-scale machines often turn out to be more passable than any factory giants due to their minimal weight and huge contact area with the surface.
Why are tracks better than wheels?
The caterpillar drive provides a significantly larger support area, which reduces the specific pressure on the ground. This allows the equipment to pass through loose snow and swamps, where a wheeled vehicle will instantly bury itself.
Off-Road Comparison Leaderboard
To structure information about different types of equipment, let's turn to a comparison of key characteristics. The numbers may vary depending on the modification, but the general order of values gives an understanding of the scale of the possibilities.
| Model | Drive type | Ground clearance (mm) | Feature |
|---|---|---|---|
| Mercedes-Benz Unimog | Full (4x4) | 460 - 780 | Portal bridges |
| TREKOL-39041 | 6x6 / 8x8 | 500 (under the bridge) | Low pressure tires |
| Jeep Wrangler Rubicon | Full (Part-time) | 274 | Differential locks |
| Toyota Land Cruiser 70 | Full (Part-time) | 225 | Frame design |
As can be seen from the table, specialized equipment like Unimog or TREKOL has an overwhelming advantage in terms of geometric parameters. However, for everyday life and even for serious tourism, they often choose the golden mean in the form of prepared jeeps.
Technical secrets: how to make an ordinary car invincible
Even if you don’t have a million-dollar budget for an all-terrain vehicle, the cross-country ability of a standard SUV can be radically improved. The first step is always to lift the suspension and install larger diameter wheels. This immediately increases ground clearance and improves angles of attack.
The second critical element is differential lock. Standard systems are often slow or ineffective. Installing mechanical or pneumatic locks allows you to transfer 100% of the torque to the wheel that has contact with the ground.
- 🛠️ Winch - a mandatory attribute that allows you to rescue yourself from the hole on your own.
- 🛠️ Underbody protection — thick metal will save the engine and gearbox crankcases from hitting rocks.
- 🛠️ Snorkel — allows you to overcome deep fords without fear of water hammer.
⚠️ Attention: Raising the center of gravity when lifting the suspension impairs stability on the highway. Be sure to change the shock absorbers and adjust the wheel alignment.
☑️ Preparing the jeep for the expedition
Psychology and skills: the main factor of success
No car, even the most passable one in the world, will drive on its own. The driver remains the key factor. The ability to sense dimensions, choose a trajectory and operate the gas correctly is more important than technical characteristics. Experienced driver Nive will circle the newbie Gelendvagen.
It is necessary to understand the physics of the process: where you need to accelerate in order to pass by inertia, and where, on the contrary, you need to crawl at minimum speed. Knowledge of transmission operating modes and the ability to use the inertia of the car is what distinguishes a professional from an amateur.
In extreme conditions, not only driving technique is important, but also the ability to quickly assess risks. Sometimes it is better to get around an obstacle than to try to take it head-on, risking damaging the car and being left without help in the remote taiga.
The most passable car is a symbiosis of reliable equipment, proper training and high skill of the driver. Without one of the components, success is impossible.
The future of SUVs: electrification and robots
The industry is moving towards electrification, and SUVs are no exception. Electric cars have a unique advantage: instant torque is available from the first revs. Models like Hummer EV or Rivian R1T demonstrate fantastic maneuverability thanks to precise traction control on each wheel.
However, the electric train has an Achilles heel - the weight of the batteries and the vulnerability of the electronics when immersed in water. Although manufacturers claim high tightness, prolonged contact with an aggressive environment remains a risk. In addition, far from civilization, charging an electric car is more difficult than refueling a diesel car.
However, the future lies in hybrid systems, where the internal combustion engine acts as a generator or is paired with electric motors. This allows you to combine fuel autonomy and electrical traction. Perhaps these are the cars that will become the new kings of off-road driving.
Can a passenger car become an SUV?
Theoretically, it is possible to install a lift kit and large wheels, but the load-bearing body of the car will not withstand serious torsional loads. You risk cracks in the bodywork and loose suspension mounts after your first serious ride.
What is "diagonal hanging"?
This is a situation where a car is standing on two diagonally opposite wheels, and the other two are hanging in the air. At this moment, conventional all-wheel drive is powerless, and cross-axle differential locks are needed.
Why is diesel better for off-roading?
The diesel engine has higher torque at low speeds and is less susceptible to water entering the air intake (it does not stall instantly), which is critical when forcing fords.
Does every SUV need a winch?
If you plan to travel beyond the compacted track - definitely yes. The winch allows you to rescue yourself without outside help, which is a matter of survival on a solo trip.