Nintendo has told Eurogamer that it has had no reports of problems with Mario Kart Wii discs.
It was speaking after those with Japanese versions of the game reported trouble loading content and numerous crashes.
Similar issues were reported following the release of Super Mario Bros. Brawl. Some Wii owners had to get their lens cleaned so the game's rare dual-layered disc format could be read.
However, Nintendo has confirmed that this isn't causing problems here, as Mario Kart Wii is only available on a single-layered disc.
Mario Kart Wii was released in Europe last Friday and is worth every penny. Pop over to our Mario Kart Wii review to find out why.