Bosch has done a survey of what type of vehicles people across the globe drive. Worldwide, petrol engines are the most popular powertrain. China leads the field: there, nearly 100% of all new car purchasers choose a petrol engine. In the U.S. and Japan, the figure is roughly 75 percent. Combining petrol direct injection with downsizing can reduce fuel consumption by up to 15%. At the same time, turbocharging helps the engine deliver more torque, especially at low engine speeds.
In the EU and India, every second new car is a diesel. In the United States, Bosch estimates that diesel's market share there will rise from 3% today to as much as 10% in 2018. In South Korea as well, diesel is becoming more and more popular. A modern diesel consumes as much as 25% less fuel than a comparable petrol engine and delivers as much as 40% more torque.
In Japan, nearly every fifth new car now features a hybrid powertrain. In just a few years, registrations of hybrids will be significantly higher outside Japan as well. Bosch forecasts that of a predicted 113 million total vehicles sold worldwide in 2020, 6.5 million will be strong hybrids, 3 million will be plug-in hybrids, and 2.5 million will be all-electric. Bosch is developing entry-level hybrids based on a 48 volt electrical system.
Powertrains that can drive on both petrol and alcohol (ethanol) are especially prominent in Brazil. The second largest market for this technology is the United States. Drivers are more independent, since such a flex-fuel system allows them to choose the more affordable ethanol. Worldwide, CNG powertrains are becoming increasingly popular. For ten years now, sales have been growing worldwide by 25 percent. CNG is up to 50% cheaper than petrol, and can reduce CO2 emissions by up to 25%.