SUV

Some cars are big and tall.

These are called SUVs. They sit high off the ground. This helps them drive on rough paths.

Many people like these cars. They can carry many things. They often have four-wheel drive. This helps them move on bumpy roads.

These cars use a lot of fuel. This can hurt our air. They also make more heat for the Earth.

Because they are tall, they can tip over. They can also be hard on people walking. This is why some cities have new rules.

SUVs are very popular today. Many people choose them for trips.

An SUV is a type of car. SUV stands for sport utility vehicle. These cars mix features from many vehicles. They use parts from passenger cars. They also use parts from off-road vehicles. Many SUVs have four-wheel drive. This helps them drive on rough ground. They also have high ground clearance. This means they sit high off the ground.

There is no single rule for what makes an SUV. Some people say they must use a truck frame. Others say any car with off-road parts is an SUV. In the UK, people often say "4x4" instead.

SUVs are very popular. In 2021, they made up 45.9% of the car market. But these cars have some problems. They use more fuel than small cars. This lets out carbon dioxide. This gas can cause global warming.

Tall SUVs can also be less safe. They have a high center of mass. This means they might tip over in a crash. They can also hurt people walking. Their front ends are very high. This makes them more dangerous to pedestrians.

A sport utility vehicle, or SUV, is a special type of car. These vehicles mix parts from passenger cars with parts from off-road vehicles.

Many SUVs have raised ground clearance to drive over bumps. They often use four-wheel drive to help them move on rough ground. There is no single rule that defines an SUV. Some experts say they must use a light truck chassis, which is a strong frame. Others say any car with off-road features counts as an SUV.

How an SUV works often depends on how it is built. In the past, most used body-on-frame construction. This means a separate body sits on top of a sturdy frame. Today, many use unibody construction. This is a way of building a car where the frame and body are one single piece.

This style is common in crossover SUVs. These vehicles aim to feel like smooth passenger cars. They still offer the high seating and view that people like.

The history of these vehicles goes back a long time. They grew from military models in the late 1930s. In 1949, four-wheel-drive station wagons began to appear. The 1955 GAZ-M20 Pobeda M-72 was a very early version of a crossover. Later, the 1977 Lada Niva used a unibody design and independent suspension. The 1984 Jeep Cherokee became a huge sales success for unibody models. By the late 1990s, SUVs became much more popular than large sedans.

SUVs are a huge part of the world today. In 2021, they made up 45.9% of the global passenger car market. However, they face many criticisms regarding safety and the planet. SUVs emit about 700 megatonnes of carbon dioxide every year. This gas is linked to global warming. Between 2010 and 2018, they were the second-largest cause of rising global emissions. They also use more fuel than smaller cars. This means they require more resources to make and run.

Safety is another important thing to notice about SUVs. Because they are tall, they have a high center of gravity. This makes them more likely to roll over in a crash. In 2003, they were 2.5 times more likely to roll over than regular cars. Their high front ends can also be dangerous for people walking. A 2021 study showed SUVs are 8 times more likely to kill children in a crash.

Drivers might feel safer in a large SUV. This feeling can sometimes make them drive less cautiously. Modern tools like electronic stability control help make them safer now.

A sport utility vehicle, or SUV, is a specific classification of automobile. These vehicles combine elements of passenger cars with features found in off-road vehicles. Common traits include raised ground clearance and four-wheel drive systems.

Because there is no single, universally agreed-upon definition, the term can be quite loose. Some experts argue an SUV must be built on a light truck chassis. Others believe any vehicle with off-road design features qualifies. This lack of a strict definition causes the term to vary by country. In the United Kingdom, people often use terms like "4x4" or "jeep" instead.

The way an SUV is built determines how it performs. Historically, most SUVs used body-on-frame construction. This method involves placing the vehicle body on top of a separate, sturdy frame. This design is common in light trucks and many traditional off-road vehicles. However, many modern SUVs now use unibody construction. In a unibody design, the frame and the body are manufactured as a single, integrated piece. This is similar to how most modern passenger cars are built.

Vehicles that use unibody construction are often called crossover SUVs. The lines between these types are becoming blurred due to new technology and marketing.

There are several distinct stages in the development of the SUV. The earliest predecessors date back to military and low-volume models from the late 1930s. In 1949, manufacturers began introducing four-wheel-drive station wagons and carryalls. The 1955 GAZ-M20 Pobeda M-72 was a Russian model that acted as an early crossover. Later, the 1977 Lada Niva became the first off-road vehicle to use unibody construction and coil-sprung independent front suspension. The 1984 Jeep Cherokee (XJ) was a major turning point for unibody sales. By the late 1990s and early 2000s, SUVs became much more popular than large sedans.

Today, SUVs represent a massive portion of the global automotive industry. In 2021, SUVs accounted for 45.9% of the world's passenger car market. Despite this success, they face significant environmental criticism. SUVs generally have poorer fuel efficiency than smaller passenger cars. They also require more resources to manufacture. These factors contribute to environmental degradation and climate change.

Between 2010 and 2018, SUVs were the second-largest contributor to the global increase in carbon emissions. They emit approximately 700 megatonnes of carbon dioxide every year. This gas is a primary driver of global warming.

Safety is another complex issue regarding these vehicles. Because SUVs are tall, they have a high center of gravity. This makes them more prone to rollover accidents. In 2003, SUVs were 2.5 times more likely to roll over than regular cars. In the early 2000s, SUV occupants were nearly three times as likely to be killed in a rollover compared to other passengers.

However, modern technology like electronic stability control (ESC) has helped. By 2015, the rollover death rate for 2011 models was less than a quarter of what it was for 2004 models. This shows how engineering can mitigate inherent design risks.

SUVs also present unique risks to other road users, such as pedestrians and cyclists. Their high front-end profiles can cause more damage during a collision. In the United States, SUVs are often exempt from certain bumper regulations. This can result in the impact hitting a smaller car at a higher, more dangerous location. A 2021 study found that SUVs are eight times more likely to kill children in a collision than passenger cars. This has led to public protests against SUVs in many urban areas. Some cities, like Paris, have even implemented higher parking charges for SUVs to manage street capacity.

Finally, the classification of an SUV affects how they are regulated and taxed. In the United States, many SUVs are classified as light trucks. This classification previously allowed them to be regulated less strictly regarding fuel economy and emissions. In India, all SUVs fall into the "Utility Vehicle" category and face specific excise taxes. In Australia, lower import duties once helped boost SUV sales compared to passenger cars. These various rules show how the SUV is not just a vehicle, but a major factor in global economics and law.