Mario Kart Wii had a successful launch and sold 300,000 copies on the launch day in Japan alone, compared to
Mario Kart DS which sold 160,000 copies on its first day and
Mario Kart: Double Dash!! which sold 180,000 on its first day.
[27] In the week ending May 4, 2008,
Mario Kart Wii had sold over a million copies in Japan alone, less than a month since its release in the region.
[28] In the UK,
Mario Kart Wii was the best-selling video game in the week ending April 12, 2008, having "the eighth biggest opening sales week in UK software history," according to
Chart-Track/
ELSPA.
[29][30] The game dwarfed all other five
Mario Wii games released up until then for the Wii combined when comparing first week sales.
[29] In the United States,
Mario Kart Wii was the second-best-selling video game in April 2008, selling 1.12 million copies, according to the
NPD Group; putting it behind the
Xbox 360 version of
Grand Theft Auto IV and ahead of the
PlayStation 3 version, both released in the same week.
[31] It ranked the fourth-best-selling game of December 2008 in the United States, selling in excess of 979,000 copies.
[32] According to the NPD Group,
GfK Chart-Track, and
Enterbrain, the game has sold 2.409 million copies in the United States, 687,000 in the United Kingdom, and 1.601 million in Japan, respectively,
for a total of 4.697 million copies sold by August 1, 2008.
[33]