What about 9.3 seconds and a final speed of 137.9 mph?

Most people that buy an 818C kit car will follow Factory Five’s building instructions and put a Subaru Impreza powertrain in it. But not the guys from EV-Controls.com, for obvious reasons. They have built an entirely different machine, with two Tesla electric motors and two Chevy Volt battery packs. With impressive results.

After taking the little electric sports car to the Luskville track, it managed to complete the quarter-mile in just 9.3 s, at 137.9 mph. Have a look at the run from the outside, in slow motion:

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But why would the car adopt Chevy battery packs instead of Tesla's? According to the info obtained by Elektrek, that would be due to a higher discharge rate from the GM equipment. 

Factory Five 818C Becomes Quarter-Mile Monster With Tesla Powertrain

That makes sense in a sports car, but it is enough to look at photos of the 818C from underneath to realise Volt’s battery packs are much easier to install in the kit car. Apart from making it lighter. They offer a 158 mi range at 70 mph speeds, according to EV-Controls.com.

For comparison purposes, the company informs the electric 818C weighs 1,088 kg less than a Model S. The problem is that that car has lots of derivatives. If you take a P100D as a reference, with its 2,250 kgs, that would take the electric 818C to a little more than 1,134 kg.

Factory Five does not disclose the weight of the 818C, only the 818R, which does not have doors. That kit car weighs 912 kg. A Factory Five forum post helps shed light on that. Owners inform a weight of 911 kg up to 1,015 kg for the model without the driver. The last one makes more sense when confronted with the 818R's official number.

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If that is correct, this EV conversion has managed to add very little mass to the kit car, which is quite an accomplishment, and makes the quarter-mile performance very easy to explain.

The 818C is 155 inches long, 69.5 in wide, 52.5 in high and it has a 96 in wheelbase. It has started its EV career with EV-Controls.com in 2016, with a red body. It was later repainted in grey. Previously, it had just the rear motor, as this video of another quarter-mile run clearly shows.

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It would be nice if Factory Five and EV-Controls.com collaborated on an electric kit car. Perhaps with a larger battery pack — though, not as large as Tesla’s — to keep the mass low.

Gallery: Factory Five 818C with Tesla powertrain