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The 2017 Porsche 911 RSR goes mid-engine, purists be damned

Porsche unveiled its World Endurance Championship and IMSA WeatherTech Championship competitor with the 2017 911 RSR. And this 911 is different from the rest, as the 4.0-liter flat-six engine powering this beast is in front of the rear axle, not behind it. That's right, this 24 Hours of Le Mans competitor ditches the iconic rear-engine layout. Porsche isn't talking specifics on how exactly things are arranged back there. The engine is new, now based on the 991 911's block instead of the previous Mezger motor that's been used for years. The transmission design is new as well – it would have to be to accommodate the new location relative to the engine. The racecar has been engineered to meet the LM-GTE class, where it will go up against other mid-engine cars like the Ford GT and Ferrari 488 GTE. Moving the engine to the middle has given Porsche the ability to fit the 911 RSR with massive bits of aero, like the humongous rear diffuser that looks like it would be more at home on a machine of war. The only thing that can compete with the diffuser for size is the top-mounted rear wing, which shares a similar design to the one found on the 919 Hybrid. Going back to the engine, the direct-injected boxer motor, depending on the size of the restrictor, generates as much as 510 horsepower and sends all of its fury to the rear wheels. The engine is paired to a six-speed sequential gearbox, which drivers can employ through paddles on the steering wheel. The new engine doesn't have a lot of weight to push around as the 911 RSR, as required by regulations, weighs 2,740 pounds. Speaking of weight, the engine layout isn't the only change for the 911 RSR. For 2017, the car ditches its steel body for one that's made out of carbon fiber. The body attaches to the chassis via quick-release fasteners, making the vehicle easier to service as exterior elements can be removed with minimal effort. The racecar also gets a radar-based collision system – aptly named the "Collision Avoid System" – which is meant to limit the 911 RSR's encounters with faster LMP prototypes. Only time will tell if the new layout and aerodynamic components help the 911 RSR beat its competition. But there will be plenty of opportunities to see the racecar in action as Porsche plans to run the 911 RSR in 19 races during the 2017 season, the first of which will take place at the IMSA opener on January 28th at Daytona, where the racecar will make its track day debut.

Mini bringing new 230-hp John Cooper Works to Detroit

Mini models may keep getting incrementally bigger, but then so do their engines. Or more powerful, anyway - especially when it comes to the John Cooper Works performance models. The JCW version of the first (post-revival) generation R50, which was really more of an upgraded Cooper S than its own model, packed a 1.6-liter supercharged four with 200 horsepower. The following R56 JCW upped that incrementally to 208 hp, but the next Works hatchback is now rumored to pack around 230 horses.
Tipped to be revealed in both three- and five-door body-styles at the 2015 Detroit Auto Show half a year from now, the F56-gen Mini John Cooper Works hatchback is expected to use the same 2.0-liter turbo four as the new Mini Cooper S, but increasing the output from 189 hp to approximately 230. That would mean it would be more powerful than either of the two previous John Cooper Works GP editions to make the new JCW the most powerful road-going Mini to date, backed by 285 pound-feet of torque driving through a six-speed manual or available automatic transmission to deliver what promises to be a blistering pace for the latest retro hatchback.

Psychology can wipe out 20-25% of your EV's range

There are two primary takeaways from a recent study of electric-vehicle driving habits in Germany. One: an electric vehicle with 25 percent of its battery charge left creates the same reaction in drivers as the fuel needle on "E" in a gas-powered car. Two: familiarity breeds comfort. The study, conducted by Germany's Technische Universitat Chemnitz and funded by the German Federal Ministry for the Environment, Nature Conservation and Nuclear Safety, put some real numbers on the concept of "range anxiety." According to Green Car Congress, that anxiety truly kicks in when there's less than a quarter of the driving range left on an EV's battery and the study found that a typical car's range is "shortened" by a 20 to 25 percent "psychological safety buffer." If we take the popular Nissan Leaf as an example, the official 84-mile single-charge range is really closer to 63 miles in the head of the driver. The longer the driver spent in the EV, the shorter his mental buffer became. The study was culled from data involving just 79 drivers who tooled around Berlin in Mini E EVs for about six months, collectively putting a quarter-million miles on the electric vehicles. The good news is that the longer the driver spent using the EV, the shorter his mental buffer became, which meant he could comfortably get more miles from the car. So, to all you EV advocates out there, know that once drivers spend some time with an EV, they get more and more used to what the car can do. It's a lesson we've learned before. Just remember that to new EV drivers, the single-charge range is a lot smaller than the one old-timers see.