Volkswagen explains how the ID.7 will manage to reach 700 km of autonomy

Sometimes nicknamed the electric Passat, the new Volkswagen ID.7 offers a remarkable range of more than 700 km. But how does she get there?

With over 700 km range announced, the new ID.7 beats all other electric Volkswagens in this area. The comparison with cars of comparable dimensions is also to his advantage, at least in the current state of affairs. A Mercedes EQE (4.95 m long, 1 cm less than the ID.7) is best credited with a range of 639 km (WLTP mixed cycle). A Tesla Model S is slightly ahead, with 724 km announced.

A Volkswagen that cuts through the air

If the Volkswagen ID.7 manages to go so far on a charge, it is largely thanks to its drag coefficient (Cx) of 0.23 which translates the aerodynamic shape of the car. Compare with the 0.22 of the Mercedes and 0.208 of the Tesla. This value is always essential on a vehicle, since it directly influences consumption, and therefore autonomy. The lower it is, the better the aerodynamics.

She is determined by several elements, which do not all have the same importance. On this large sedan, the bodywork accounts for 50%, the wheels and tires for 30%, the underbody for 10%, while the air openings (to the radiator for example) also account for 10% according to the German manufacturer. .

It is therefore on all these parameters that the engineers of the German brand had to concentrate to obtain a good drag coefficient. There low windshield tiltwhich does not mark too sharp a break with the bonnet, contributes for example to making the ID.7 an aerodynamic car, as does the gently sloping roof drop and the slightly tapered back. The shape of the rims, side sills and mirrors has been determined in such a way as to limit their resistance to air.

The front part of the ID.7 also has two scoops on either side of the bumper, which divert airflow towards the sides of the car. The relatively low position of the bonnet, the small appendages on the front wheel arches, the flat bottom and the active radiator (with a flap that opens only when necessary) also reduce the drag coefficient. Finally, the rear diffuser and the small spoiler on the trunk are also there to direct the airflow favorably.

Based on the MEB platform, which is already found on the other Volkswagens in the ID range, the new ID.7 inaugurates a new electric motor of 286 hp. Presented as particularly efficient in terms of consumption, the latter also contributes to promoting autonomy as we have already seen in detail.

A performance to qualify?

If the first figures put forward by Volkswagen are promising, they must be taken with some caution. The 700 km are an estimate of the manufacturer, and not the autonomy approved in the WLTP cycle. Moreover, there is always a gap between the theoretical figures (whether estimates or WLTP measurements) and reality. In real life, electric cars often do a little worse than advertised, especially if you take the fast lanes a lot.

Another important detail: the ID.7 will let you choose between two battery capacities, 77 and 86 kWh net. It is obviously only with the second that the 700 km will be possible. With the 77 kWh battery, range will peak at around 615 km.

Finally, the figure of the ID.7 must be put into perspective with those of the current references in terms of autonomy. For some models, the 1,000 km threshold is not very far away, and it is sometimes even crossed, at least in theory… Toyota even announces cars with 1,500 km of autonomy and which recharge in 10 minutes. 2028.

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