Mazda's all-new CX-5 compact crossover (which we told you about earlier today) will be joined by the refreshed 2012 Mazda3 at the Japanese firm's Frankfurt Motor Show stand.

Revealed for the first time at the Toronto Show in Canada in February, which was followed by an appearance at the New York Auto Show in the U.S. earlier this year, the 2012 Mazda3 gains new and more fuel-efficient engines that deliver lower CO2 emissions.

Mazda has announced the introduction of two new Mazda3 models at the 2009 Geneva Motor Show. First is the 2010 Mazda3 MPS, which is known as the Mazdaspeed3 in the U.S. The more exciting version of the Mazda3 will feature the same 2.3 DISI turbo engine as the current Mazdaspeed3, but its not yet known if it will feature more power.The second model to be unveiled is the Mazda3 i-stop is powered by