Wiesmann have made some upgrades to the MF5, shown at the 2011 Geneva Motor Show as filmed by Shmee150 in association with br br The top-of-the-range model -- the MF5 -- will also be equipped with the 4.4 liter V8 twin turbo direct injection petrol engine. The only difference between the two is the performance. The M-motor specifications are 555hp at 5,750 to 6,750rpm, 0 to 60mph in 3.9 seconds and a top speed of 193mph. The new engine makes the MF5 model series the most powerful Wiesmann car ever produced.