A large part of that is the C5 sedan , which is why the French carmaker wants to diversify the model range. Car New China reports that a 1.6-liter turbo, THP as Citroen calls it, version of the sedan is being tested.Currently, the most basic C5 sold in China comes with a 2.0-liter 147 hp engine. The European version of the 1.6 THP offers 156 hp and should improve economy as well. With a manual, it gets 6.7 l/100km on the combined cycle and accelerates from 0 to 100 km/h in a brisk 8.6 seconds.Of course, Dongfeng won't replace the bigger 2-liter with the new 1.6 turbo because it's very popular.