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BMW i3 REx rated at 117 MPGe, 39 mpg with 72-mile EV range

The numbers haven't made their digital way to the EPA's website yet, but we can now confirm that the BMW i3 with range extender will be officially rated at a combined 117 MPGe with 39 mpg once the battery runs out. That puts the amazing little city car just ahead of the pure-electric Fiat 500e (116 MPGE, combined) and behind the Honda Fit EV (118) and the Chevy Spark EV (119). In the plug-in hybrid category, it's at the top of the class, beating out the Honda Accord PHEV, which is rated at 115 MPGe but is also a much bigger vehicle. The i3 REx also has an official all-electric range of 72 miles and can go another 78 on gas (for a total of 150). When it's not carrying around the extra fuel tank and engine, the all-electric i3 gets 124 MPGe (combined), which is the currently the highest in the US. The i3 EV also has an all-electric range of 81 miles. BMW expects to deliver the first i3 REx in the US this week and delivered the first all-electric version earlier this month. There was a bit of a hold-up on the range-extender version thanks to a delay with getting these EPA numbers. Now that all the bureaucratic boxes have been checked, it's off to customer driveways they go.

Next BMW 4 Series convertible may ditch folding hardtop

In 2007 the E93 BMW 3 Series convertible switched from a fabric roof to a folding hardtop, but reports out of Germany and BMW say that the next-generation 4 Series convertible will go back to a fabric roof. AutoBild disclosed that nugget last month, now BMW Blog says a BMW source told their sister German publication BimmerToday that it's official and "a decision has already been made." The official car of pro tennis clubs around the world, the droptop 4 Series isn't due in dealers until 2020 or 2021 so one would think there remains some leeway about the top. However, teams of designers are working on the new car right now, so it's entirely possible that a design course is fixed. From the time that the model made the switch, fabric roofs have got so good that there is barely, if any, penalty for using them. It's supposed the change is being made to save weight and free up space. The next 4 Series range is aiming for a lot more sportiness, so on top of its CLAR (cluster architecture) body, it's expected to get active steering, adjustable dampers and anti-roll bars, bigger brakes, and brake-based torque vectoring. Detail improvements like reduced-friction wheel bearings, and faster torque transfer for its all-wheel-drive system are on the long list of upgrades. So too are aluminum and carbon fiber wheels, which will likely be developments based on the carbon wheels BMW showed off last year. Driver assistance options will be legion, with remote-controlled parking, semi-autonomous driving up to 40 mph, and hands-free overtaking perhaps among them.

BMW preparing 'optimized driveline' for i3, provides more range

Autocar reports that BMW is preparing upgrades for the all-electric i3 that will greatly extend its range. Company sources called it an "optimized driveline," powered by a new, 22-kilowatt-hour lithium-ion battery. That's the same capacity as the battery in the current hatchback but it will have a higher density. Combined with improved electronics and new software for battery cooling and the electric motor, Autocar's unnamed BMW source said the new internals will be good for "well over 124 miles in real-world use." The Environmental Protection Agency rates the present i3 as having 81 miles of range, meaning this tweaked version would be a 50-percent improvement if that range number applies to the US market (it's likely the more lenient European number, since Autocar is a UK publication). BMW said the update takes advantage of gains in battery efficiency over the past two years. The i3 with the range extending engine would also get the update, and current owners will reportedly (and surprisingly) be able to purchase the revised powertrain for retrofitting. The Autocar report appears to back up a recent article in German newspaper Die Zeit in which BMW CEO Harald Kruger said the the i3 will get more range next year, and "Another technology leap is going to come in three or four years." The i3 was designed for to make these kinds of upgrades easy to manage. We wait to find out when it will be available, whether it will increase the price of a new car, and how much it will cost current owners to retrofit. Featured Gallery BMW i3 Shadow Sport Edition: LA 2015 News Source: Autocar via World Car FansImage Credit: Copyright 2015 Sebastian Blanco / AOL Green BMW Hatchback Electric Luxury range anxiety bmw i3 rex