How Much Slower Are 2014 Formula 1 Cars Compared to the 2013 Models?

Formula One fans have known for a while that the sport was undergoing significant changes in 2014. The designs are uglier, the engines are quieter and, perhaps most significantly, the cars are slower. Estimates for how much slower, compared to the 2013 cars have ranged from two to five seconds per lap. Of course, this also depends on the circuit—two seconds at Spa is different than two seconds at Monza. Now that the first pre-season test is complete, what can we tell about the relative speed o...