FIA Q&A: 2014 engines are a step forward
From 2014 new Formula One engine regulations will be introduced, replacing the current 2.4 litre V8s with more efficient 1.6 litre, turbocharged V6s....
Source: http://www.motorsportforums.com/formula-1-news/146416-fia-q-2014-engines-step-forward.html