Very Nice 2003 Sl500 - Panorama Roof, Amg Sport Pkg, Parktronic, Comfort Pkg +++ on 2040-cars

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Why it's difficult to accurately test the efficiency of a plug-in car

When it comes to electric vehicles and plug-ins in general, the Environmental Protection Agency-certified range is a hugely important number. While actual range anxiety is largely psychological, the magic number does provide a point of comparison of buyers considering one EV over another. The driving distance is also often touted by automakers when marketing their models. Unfortunately, as Green Car Reports finds in a recent deep dive, the way the EPA calculates the figure is a convoluted mess, and discovering the reasons why is definitely worth the read. The issue isn't about bad science but instead comes down to vague wording. The EPA's accepted range test is sourced from an evaluation called J-1634 from the Society of Automotive Engineers, and it seems to provide balanced results for vehicles that automatically reach a single state of charge when plugged in. However for models with multiple charge settings, the situation gets complicated very quickly. Of course, these modes are often created in the software, meaning that a car's certified driving distance can change with just a few taps of the keyboard without the real world results owners might experience actually changing. By showing the test's effects on the certified range for the Tesla Model S, Nissan Leaf and Mercedes-Benz B-Class Electric Drive over the last few years, Green Car Reports makes a compelling argument that it's the evaluation that needs to change. Thankfully, it appears that the solution is a very simple one. Get the details here.

Mercedes celebrates with World Championship edition SL63

Mercedes has plenty to be celebrating at the moment, having just won the Formula One World Championship in spectacular style – taking the constructors' title by a huge margin and the top two slots in the drivers' standings as well. It almost goes without saying that the German outfit would celebrate with a special edition, and that's just what we're looking at here. Presented at a special celebratory Stars & Cars event in Stuttgart in front of 50,000 jubilant fans, the Mercedes-Benz SL63 AMG World Championship 2014 Collector's Edition is based on Benz's twin-turbo V8-powered roadster but with some choice upgrades. Two versions will be offered: one in black with gold accents (displayed with the Silverstone circuit layout), the other in white with silver accents (and the Hockenheim map). One was designed by Lewis Hamilton, the other by Nico Rosberg. We'll let you sort out which one was done by which, but either way there'll only be 19 examples, each dedicated to a different grand prix circuit in the championship which Mercedes positively dominated – winning all but three, scoring eleven one-two finishes and landing on the podium at each and every one.

2016 Canadian Grand Prix: A tale of 3 starts and 2 stops

The first curve in the Canadian Formula 1 Grand Prix happened before Turn 1. Lewis Hamilton sat on pole in the Mercedes-AMG Petronas, Sebastian Vettel in a Ferrari behind. That order changed as soon as the lights went out. Hamilton and teammate Nico Rosberg started well enough, but Vettel flew off the line, passing Hamilton in just a few meters. Vettel led through Turn 1 while Hamilton defended against Rosberg trying to pass on the outside by using the entire track. Hamilton bumped his teammate, sending Rosberg into the concrete runoff with an " infuriating but fair" maneuver Hamilton blamed on understeer. The Brit stayed second, his teammate fell to ninth by the time he rejoined the circuit and got back on the gas. The Ferrari finally looked an even match for the Mercedes, Vettel slowly building a gap out front. On Lap 11 the Honda in Jenson Button's McLaren self-ignited just after the hairpin, forcing Button to pull over on the Casino Straight. A Virtual Safety Car slowed the field, convincing Ferrari to pit its drivers. Vettel came in, handing the lead to Hamilton. The marshals cleared Button's car more quickly than expected, so the scuderia didn't get the full time advantage it expected, sending Vettel back on track seven seconds behind the Mercedes. Button's and Ferrari's unplanned stops decided the race. Ferrari had always planned to run a two-stopper, but the early pit didn't give the team a chance to gauge the ultra-soft Pirelli. The ultra-softs lasted longer than anyone expected. Hamilton only pitted once, Vettel had to pit again, and the Ferrari simply couldn't close the gap to the Mercedes even with newer tires. Post-race commentary accused Ferrari of two blunders: giving up track position, and not taking advantage of Mercedes' only known weakness of not being nearly as good in dirty air. If the ultra-softs had fallen off a performance cliff, however, Ferrari's play would have been considered daring and brilliant. Hamilton took his second win of the season, followed by a hard-driving Vettel five seconds later. Valtteri Bottas and Williams got everything right, the Finn taking advantage of a one-stop strategy, a perfectly-timed pit stop, and more unusual Red Bull issues to finish third. It's Williams' first podium of the year. Max Verstappen claimed fourth after two pit stops, holding off a frustrated Rosberg who had to make an unscheduled stop to remedy a slow puncture.