Mazda's new RENESIS named International Engine of the year

1.4-litre to 1.8-litre Class: Mini Supercharged 1.6-litre (Cooper S)

Nine out of 12 awarded the MINI points while 5 rated it top of its class. 1.8-litre to 2-litre Class:Honda 2-litre (S2000)The Honda S2000 engine once again won its capacity class of 1.8 to 2.0 litre due to its willingness to rev so freely and its remarkable specific output.

2-litre to 2.5-litre Class: BMW 2.5-litre (325i, 525i, Z4)

BMW's 2.5-litre straight-six has infinitely variable bi-VANOS valve timing, and won this category clearly with 152 points, 27 points ahead of its nearest rival. Almost half the entire panel of judges awarded points to this BMW unit.

2.5-litre to 3-litre Class: Mazda RENESIS Rotary (RX-8)

3-litre to 4-litre BMW 3.2-litre (M3)

The most winning marque in the IEOY Award history, BMW's powerful 3.2-litre M3 engine has won this category three years in a row, and this time by a record margin - the M3 donk scored 202 points, 93 points more than the second-placed Porsche 3.6-litre 911 GT3 unit.

Above 4-litre Class: Volkswagen Diesel 5-litre V10 (Touareg/Phaeton)