2015 Mercedes-benz C-class 2dr Cpe C 63 Amg Rwd 507 Edition on 2040-cars

Auto blog

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.

Aston Martin's deal with Mercedes-AMG more than skin-deep

Aston Martin is working on a raft of new models. But it's not going it alone: it has a technical partnership with Mercedes-AMG, the details of which have only been revealed in bits and pieces. If these latest spy shots are anything to go by, however, the arrangement could run deeper than anyone initially let on. Spied undergoing testing at the Nurburgring, this prototype for the upcoming successor to the Aston Martin DB9 is widely expected to be called the DB11 (10 is being used by James Bond's new ride). From the outside it doesn't look different than the previous versions we've seen running around, but this time we can also peer into the cabin, and that's where things start to get interesting. Despite the best arm-waving efforts by the development engineers, our spy photographers managed to snap a couple of shots of the interior. And though it looks far from being ready for production, the components we see appear to have been lifted from the Mercedes S-Class Coupe – particularly the steering wheel, digital instrument cluster, and almost the entire center console. This speaks to a deeper collaboration between the British and German automakers. The 4.0-liter twin-turbo V8 from the Mercedes-AMG GT, C63, and G500 4x42 is already being adapted for use in the next generation of Astons. Related Video:

Mercedes trolls kids with uncrashable toy cars

Kids love crashing toy cars. Adults in the real thing, not so much. That's the angle behind Mercedes' latest ad, crafted to promote the company's latest safety systems. The video clip humorously posits what would happen if Mercedes gave out sets of toy cars with strong magnets in them that would prevent kids from crashing them into each other. Needless to say, the kids depicted are not amused by the endeavor. And neither would we have been when we were that age. But the point is nevertheless made. That point is to highlight the company's Brake Assist System Plus – Benz-speak for an automatic braking system – fitted in the new C-Class (among other models). The technology uses two radar systems – one mounted behind the three-pointed star in the grille and another in the front bumper – to detect other vehicles on the road, and, when necessary, apply the brakes. It'll also flash the brake lights to warn drivers behind. The inclusion of Cross-Traffic Assist applies the same measures at intersections, while Pre-Safe Brake adds pedestrian detection into the mix, as well. The creative campaign is the work of the Jung von Matt/Alster ad agency in Germany. And it strikes us as a clever way to showcase the system – or at very least, it looks better than some of the German automaker's previous attempts from ten years ago. Check it out for yourself in the video above.