Volkswagen has unveiled a new long-range electric vehicle concept that has already set a benchmark for efficiency, achieving up to 9.02 miles per kilowatt-hour (mpkWh) and demonstrating how existing technology can dramatically extend real-world range. The Mission Efficiency prototype, built on the same MEB+ architecture as the upcoming ID Polo, completed a 794-mile drive from Wolfsburg to Vienna while recording an average efficiency of 8.27mpkWh, discounting charging losses.
The test route, which passed through Poland and Berlin, included autobahn speeds of up to 86mph and an average speed of 42mph. On a single charge of its 52kWh battery, the concept covered 406 miles — an increase of 124 miles over the ID Polo's WLTP range. In separate constant-speed tests under controlled conditions, the car exceeded 500 miles without stopping. For context, the ID Polo's claimed maximum efficiency is around 5.4mpkWh.
To achieve these figures, Volkswagen combined the entry-level ID Polo's 114bhp front-mounted motor with the top-spec version's battery. Engineers reduced the 52kWh pack's safety buffer, a common feature designed to sustain battery performance over decades, boosting usable capacity to 54kWh. The MEB+ underpinnings, also used for the Cupra Raval, VW ID Cross and Skoda Epiq, were reshaped to allow a lower and longer body that narrows at the rear, with the back axle 17cm slimmer than standard.
Aerodynamic enhancements played a critical role. The underside of the body is completely covered, and active intakes on the nose and wheel covers help the car achieve a drag coefficient of 0.158. By comparison, the similarly shaped XL1 hypermiler had a coefficient of 0.189, while the Mercedes EQS, today's sleekest production EV, achieves 0.20. The Continental tyres are slimmed to 155mm wide and inflated close to maximum pressure, though the alloy wheels remain 18in in diameter.
Despite the size increase, the concept weighs less than 50kg more than the ID Polo, at 1.6 tonnes. Volkswagen's head of innovation, Christoph Riechel, told Autocar that this subtle weight gain helps illustrate how «real world» the car is. Unlike the experimental XL1, the Mission Efficiency was built to be like a «series customer car», with two rear seats and a spacious 600-litre boot squeezed into its 4.2m-long frame. The rear wheel covers can be folded out to reveal small storage boxes, each large enough to house charging cables.
The two front seats are based on those of the T-Roc Cabriolet, among the lowest-set in the VW Group parts bin, but are made using 3D printing technology to save weight. The dashboard features a removable tablet touchscreen mounted on a detachable arm, while the driver's display is recognisable from current ID models. Notably, conventional mirrors and unpowered door handles replace the digital rear-view camera and powered handles used in the XL1, saving energy.
A solar roof mounted to the panoramic glass above can provide as much as 370W of energy to power interior electronics, hinting at how future VW models could use solar power to reduce the energy impact of cabin features. The glass roof also frees up extra head room, essential given the low roofline, and allows just enough space for a near-six-footer in the back. Two slim storage trays sit underneath the rear chairs.
While the Mission Efficiency is not slated for production in this form, its primary purpose is to provide Volkswagen's engineers and aerodynamicists with a real-world reference point for boosting the efficiency of existing cars using current-generation technology, without waiting for transformative advances. Riechel said features such as active air intakes, advanced powertrain heat management, 3D printed seats, recycled plastics and sustainable cloth materials are being further developed for production. The detachable tablet could also offer a cost-effective way to save weight by eliminating a full infotainment system.
Asked whether this represents the limit of the MEB+ platform, Riechel explained that while the front of the car from the front seats forward is series MEB+, the A-pillars are much more steeply angled than any other car's to improve aerodynamics. The rear, with narrower tracks and a covered flat underfloor, features the bigger changes. «It's not necessarily the limit of what we can do, just what we needed to do here,» he said.