Out of Spec Reviews spent a day trying to make a Renault Twizy faster and learned something about their own car instead. The host says he bought the little quadricycle at a Michigan liquidation sale, from a company that had been using it as a benchmark vehicle for a competitor it never got around to building, and has owned it three or four years. Believing it was the 45 km/h version sold in some European markets, he ordered a higher amperage inverter, around a thousand dollars, to convert it to the quicker specification. Then he looked underneath. The 450 amp unit was already fitted. What follows is a track session with a GPS timer, a Bluetooth tune, and a speedometer that turns out to be reading badly low.
Vehicles like this barely exist as a category in the United States. In Europe they are quadricycles, which is why, as the video notes, the 45 km/h version can be driven from age 14 in some markets without a full licence. Small electric quadricycles have quietly found a niche in dense European cities for exactly that reason, but almost none of them reach America through normal channels, which is how a benchmark car from a defunct startup ends up at auction in Michigan. The ownership picture in the video is the genuinely useful part for anyone tempted. The hosts say the car has needed one 12 volt battery in years of use, and that fitting it cleared a service light on the dash. The catch is parts. They describe the rear brakes as a single hub assembly with the axle splines built in rather than a separate rotor, so a worn rear brake means buying the entire unit. On a car with no dealer network behind it, one component like that can be a serious fraction of what the vehicle cost.
On the numbers, the video reports a 6 kWh pack that had lost about one kilowatt hour of capacity when checked roughly two years ago, and an odometer showing 29,832 km. The hosts note the indicated speed ran well below the GPS figure all day, so they suspect the true distance is higher than the dash suggests. The baseline run, in stock tune with two people aboard, was 8.1 seconds to 28 mph and a top speed around 50 mph. After switching the aftermarket tune to its maximum setting, they record 4.9 seconds to the same speed, 52 mph into a headwind and 57 mph on a run the other way. They work the system out at roughly 48 volts and 450 amps, call it about 18 kilowatts or 25 horsepower, and say 100 horsepower is the number they actually want. The tune also raises regen, which they point out takes load off those expensive rear brakes. Timing came from a GPS based drag meter rather than the car's own instruments, which matters given how far off the dash reading was all day. The rest of the video is a shopping list: they want a motorcycle sized powertrain, DC charging, and closer to 15 kilowatt hours under the seat, and they float the battery modules some owners fit for extra range as a separate upgrade path that does nothing for speed.
Bottom line: This is not a review, it is public thinking out loud about what to do with a car nobody stocks parts for, and it is more useful than most reviews because of it. The tune is the correct first move: it nearly halved the 0 to 28 mph time for the price of an app, and it costs nothing to undo. The motor swap talk is where it gets expensive and where the thing stops being a Twizy. If they really do build a cheap spec racing series out of microcars, that is a better idea for entry level electric motorsport than anything the industry has put forward.
Commentary on a third-party video. Figures and claims are as presented in the source and have not been independently verified. Spotted an error? Tell us and we will correct it.