While the Clio has become a little bit shorter for its 5th generation, the Polo actually grew by a lot in 2018, when the Mk6 came out. Despite this, the advantage in terms of practicality seems to go to the French car. Trunk space is about the same, marginally favoring the Polo. But thanks to recessed front seats, rear passengers of the Clio have better legroom.
Also, for the first time in forever, the Renault model has a better dashboard. It's thanks to an 8.2-inch portrait infotainment sitting up high. The digital dashboard in the Polo is better, but at least the one in the Clio no longer looks like a toy. Carbon trim for the dash and doors also helps. We think the exterior styling favors the Polo, as its French rival just looks like a facelift for the older model.
As for the engine range, both cars are probably going to rely mainly on their respective 1-liter 3-cylinder turbo engines. The Polo is a little older, so it already has a performance version, the 200 horsepower GTI. But the RS rival isn't far behind. It's also a little bit cheaper to buy and thanks to a hybrid engine can also be more frugal.