City Car
As the name suggests a city car is a car designed for use in urban areas, they are compact and highly manoeuvrable. 'City cars' is sometimes used as an umbrella term for a small car, also known as subcompacts or superminis.
Compact
Size wise a compact car fits between a supermini and a mid-sized car, such as a saloon or hatchback, in Europe they would fall into the C-Segment category.
Crossover
A crossover is a combination of two different types of vehicle, normally a SUV is crossed with a hatchback, city car or MPR. Crossovers are relatively new additions to the car market, but there are many examples, including the Nissan Juke, a compact SUV, and the Peugeot 3008 a mix of hatchback and SUV.
Estate
An estate car, or station wagon as it is known in the US, is a saloon car with an extended boot area. Due to the amount of boot space estates make good family cars.
Hatchback
A hatchback is similar to a saloon except access to the boot is through a large rear door, that often incorporates the window, whilst a saloon has a lift up boot lid. Hatchbacks are available as three or five doors, and many hatchback models, such as the Volkswagen Golf, Peugeot 207 and Ford Focus, have saloon versions to.
Hot Hatch
Hot hatch is an informal term for a hot hatchback, a three or five door hatchback that is considered to be a 'high performance' car, i.e. they are fitted with turbocharger and offer a sporty driving experience. The Volkswagen Golf GTI is commonly touted as the original hot hatch, and is still very popular today.