Volkswagen Mission Efficiency sets three world records with 6.89 kWh/100 km on ID. Polo hardware

Three records, one modest battery

Volkswagen has unveiled the Mission Efficiency, a near-production concept it presents as the world's most efficient electric car, and it comes with three world records attached. According to Volkswagen's press release, the concept achieves a drag coefficient of 0.158, a record for any road-approved car; 6.48 kWh/100 km during a controlled 'ideal trip' at a constant 68 km/h with no gradients and the air conditioning switched off; and the title of most economical near-production electric car in its class. Electrek reports the records were officially verified by the Record Institute Germany (RID) in the 'near-production, everyday four-seater EV' category. ²⁴

The headline consumption figure comes from a documented drive of 1,278.36 km from Volkswagen's development centre in Wolfsburg, via Poznań in Poland and Olmütz in the Czech Republic, to Vienna. Volkswagen says the car averaged 6.89 kWh/100 km without charging losses (7.51 kWh/100 km including charge losses) at an average speed of 67.72 km/h and a top speed of 138 km/h. The 54.9 kWh net battery was charged only once en route, and the car arrived in Vienna with 164.0 km of range still showing. ¹²

Not every outlet matched those numbers exactly. Chasing Cars reported the ideal-circumstances figure as 6.89 kWh/100 km, combining it in the same framing as Volkswagen's WLTP claim of 8.4 kWh/100 km, whereas Volkswagen's own release gives 6.48 kWh/100 km for the ideal trip and 6.89 kWh/100 km for the real record drive. New Atlas similarly quoted the car's recorded drive figure of 7.51 kWh/100 km as '8.27 miles/kWh', and its gallery captions referred to a '59.4-kWh' battery that contradicts Volkswagen's stated 54.9 kWh net figure. On the conflicting numbers, Volkswagen's press release is the authoritative primary source. ¹²⁶⁷

Built from the ID. Polo parts bin

The point of the exercise, Volkswagen stresses, is that nothing exotic was used. The Mission Efficiency is based on the MEB+ platform with front-wheel drive and takes its 99 kW (135 PS) electric motor and high-voltage battery directly from the new ID. Polo, the series-production model Volkswagen was presenting to international media in Vienna, which the brand deliberately chose as the record drive's destination. Volkswagen brand CEO Thomas Schäfer said the three records were set 'using affordable production technology from the ID. Polo and ID. Cross', describing the project as 'technology for the masses – not just for the few'. ¹²

Development board member Kai Grünitz said the drive system developed for all front-wheel-drive MEB+ models is 'extremely lightweight, very efficient' and ideal for the record car, while Volkswagen's German-language site identifies the drive unit specifically as the APP290 with a Volkswagen-developed pulse inverter that further improves efficiency. Preliminary development chief Christoph Riechel coordinated the Wolfsburg-built project, which Volkswagen credits to Grünitz's team. ¹³⁵

The efficiency gap against the production car widens with speed: Volkswagen says that from 80 km/h and above, the Mission Efficiency consumes more than 30 per cent less than a standard ID. Polo, and that driving at 140 km/h uses roughly the same energy as an ID. Polo at 100 km/h. For context, New Atlas notes the ID. Polo's WLTP consumption of 13.3 kWh/100 km, meaning the concept is nearly twice as efficient on paper. ²⁷

Aerodynamics first, and deeply

The record drag figure comes from a combination of a 0.158 Cd and a small frontal area of 2.08 square metres. Volkswagen details a teardrop silhouette that tapers to the rear, three active cooling air flaps flush in the front end that open only as far as needed, fully clad rear wheels and a fully enclosed underbody, frameless windows and door handles integrated into the body skin. Wheels contribute 25 to 30 per cent of aerodynamic resistance, Volkswagen says, so patented rim deflectors stop air swirling inside the rims, and a concept tyre developed with Continental, based on the EcoContact 7, achieves rolling resistance of 4.9 kg per tonne, about 25 per cent below the threshold for the EU's best Class A tyre label. ¹²

The body is 4,775 mm long, 1,744 mm wide and 1,392 mm high, sitting 722 mm longer than the ID. Polo thanks to a 100 mm longer wheelbase (2,700 mm) and a large rear overhang that enables the teardrop shape. It pairs the ID. Polo's body structure with a self-supporting aluminium structure, with doors, bonnet, boot lid and wings in a high-strength CFRP-aramid composite, and it holds EU road approval meeting the corresponding protection, strength and crash requirements. ¹²

Brakes, solar power and a bring-your-own-screen cabin

Two technologies in particular could travel beyond the concept. At the rear, the Mission Efficiency uses an electromechanical brake developed by Volkswagen with AUMOVIO, which also supplies the ID. Polo's brake system, cutting rear-axle friction losses to near zero, eliminating rear brake lines and fluid, and allowing variable brake-force distribution for better recuperation and cornering stability. Chasing Cars notes the rear brake already has EU road approval. ¹²⁶

A 370 W photovoltaic system integrated into the glass roof and boot lid supplies the on-board electrical system's consumers, reducing the load on the traction battery. Volkswagen says that, depending on season, region and weather, this can add up to 30 km of real range per day. Inside, weight saving continues: there is no fixed infotainment display, with a 'Bring your own device' clamping rail taking an Android or Apple phone or tablet instead, a mobile Bluetooth speaker replaces fixed speakers, and the rear seats are limited to passengers up to about 1.60 m tall. ¹²

Everyday usable, but not for sale

Despite the record focus, Volkswagen pitches the coupé as a practical 2+2-seater with a 481-litre variable luggage compartment, extra stowage under the rear seats and in the body sides for items such as the charging cable, and a foldable rear seatback creating a load area up to 1.80 m long. Technical data lists a 160 km/h top speed, 0-100 km/h in 9.0 seconds, 105 kW maximum DC charging and WLTP consumption of 8.4 kWh/100 km. ¹²⁵

Buyers should not expect to order one. Volkswagen's own model page carries the disclaimer that the Mission Efficiency is a concept vehicle and 'the pictured vehicle is not for sale', a point Chasing Cars echoes in reporting that, unlike its predecessor, it is not planned for production. Both publications draw the line to the 2013 XL1 plug-in hybrid, which Volkswagen calls the most economical production car of its day; Electrek observes the concept's 0.158 Cd beats the XL1's 0.189 while using volume production hardware rather than bespoke carbon-fibre diesel-hybrid technology. ⁴⁵⁶