1. Volvo S40

Details:

Fuel type Diesel

(0-100)

Six-speed manual gearbox 11,4 s

Fuel Consumption (highway)

Six-speed manual gearbox 3,5 l/100km

Fuel Consumption (city)

Six-speed manual gearbox 4,3 l/100km

Fuel Consumption (mixed)

Six-speed manual gearbox 3,8 l/100km

2. Mini

Engine: 1.6L I-4

Transmission: 6 Speed

This mini is very economical class I haven't found any Fuel Consumption for it but from reviews I understood that its very economical.

it looks pretty sporty and you can select from many models.

3. Hyundai Sonata 

The 2011 Sonata is a 4-door, 5-passenger family sedan, available in 9 trims, ranging from the GLS Manual to... read more the Hybrid.

Upon introduction, the GLS Manual is equipped with a standard 2.4-liter, I4, 198-horsepower engine that achieves 24-mpg in the city and 35-mpg on the highway. A 6-speed manual transmission with overdrive is standard. The Hybrid is equipped with a standard 2.4-liter, I4, 166-horsepower, hybrid engine that achieves 35-mpg in the city and 40-mpg on the highway. A 6-speed automatic transmission with overdrive is standard.

4. Volkswagen Jetta SportWagen

The 2011 Jetta SportWagen is a 4-door, 5-passenger wagon, available in 3 trims, ranging from the 2.5L S to... read more the 2.0L TDI.

Upon introduction, the 2.5L S is equipped with a standard 2.5-liter, I5, 170-horsepower engine that achieves 23-mpg in the city and 33-mpg on the highway. A 5-speed manual transmission with overdrive is standard, and a 6-speed automatic transmission with overdrive is optional. The 2.0L TDI is equipped with a standard 2.0-liter, I4, 140-horsepower, turbo, diesel engine that achieves 30-mpg in the city and 42-mpg on the highway. A 6-speed manual transmission with overdrive is standard. A 6-speed automatic transmission with overdrive is optional.

I would take these cars if I would be a teenager.