Automakers are using smaller engiens, combined with turbos in order to produce cars that have lower pollutant emissions. Usually 2-liter four-cylinder engines are very popular, since they are able to produce lots of power, that until a few years ago was only produced by sports cars with much larger capacity engines. Here are the 10 most powerful cars with four-cylinder engines that you can buy today:

- Mercedes-Benz A45 AMG, CLA45 AMG and GLA 45 AMG
Mercedes-AMG offers the strongest 2.0-liter four-cylinder engine on the market. This is the 2.0-liter turbo engine that is equipped in the A45, CLA 45, and GLA 45 that produces 381 hp with 475 Nm of torque. The A45 is able to do the 0-100 km/h in 4.2 seconds, with its top speed electronically limited to 250 km/h.

2. Ford Focus RS
Ford has equipped the Focus RS with a 2.3-liter four-cylinder EcoBoost engine that produces 350 hp with 470 Nm of torque, that help it to accelerate from zero to 100 km/h in 4.7 seconds, with its top speed reaching 266 km/h.
3. AUDI S3
The Audi S3 is equipped with a 2.0-liter TFSI engine that delivers 300 hp at 5,500 rpm with 380 Nm of torque from 1,800 to 5,500 rpm.
4. AUDI TTS
The Audi TTS, is equipped with the same engine as the S3, but it produces 10 more hp, reaching 310 hp and 380 Nm of torque from 1,800 to 5,700 rpm, that enable it to do the 0-100 km/h in 4.6 seconds, with its top speed electronically limited to 250 km/h.
5. Ford Mustang 2.3
The basic version of the Mustang is equipped with the same engine as the Focus RS, but it produces less horsepower. Its power reaches 314 hp with 433 Nm torque that enable it to do the 0-100 km/h in 5.8 seconds, with its top speed reaching 234 km/h.
6. Honda Civic Type R
The Honda Civic Type R is driven by a 2.0-liter VTEC Turbo engine that delivers 310 hp at 6,500 rpm and 400 Nm from 2500 rpm. This power enables the Japanese hot hatch to reach 100 km/h from a standstill in 5.7 seconds, with its top speed reaching 268 km/h.
7. Porsche 718 Boxster and Boxter S
Porsche presented the 718 and Boxster 718 Boxster S, that are equipped with new four-cylinder, flat, turbocharged engines. The 718 Boxster, is driven by a 2-liter engine that delivers 300 hp and 380 Nm of torque from 1,950 to 4,500 rpm. The 718 Boxter S is equipped with a 2.5 liter engine that delivers 350 hp with 420 Nm of torque from 1,900 to 4,500 rpm. The engines are available with either a 6-speed manual transmission or an automatic. With the PDK and the Sport Chrono Package, the 718 Boxster can do the 0-100 km/h in 4.7 seconds with its top speed reaching 275 km/h, while the 718 Boxter S can reach 100 km/h from a standstill in 4,2 seconds with its top speed touching 285 km/h.
8. Subaru WRX STI
The Subaru WRX STI features a turbocharged, boxer 2,5 liter engine that delivers 300 hp at 6,000 rpm and 407 Nm of torque at 4,000 rpm. The engine is combined with a special reinforced six-speed manual transmission and a four-wheel drive system, while it is able to do the 0-100 km/h in 5.2 seconds, with its top speed being 255 km/h.
9. Volvo XC90, S90 and V90
Volvo equips the XC90, S90 and V90, with the T6 2.0-liter Drive-E turbo four-cylinder engine that produces 320 hp with 400 Nm of torque.
10. Volkswagen Golf R
The Golf R, is equipped with a 2.0-liter TSI engine that delivers 300 hp with 380 Nm of torque and it is able to do the 0-100 km/h in 4.9 seconds with its top speed being limited 250 km/h.






