1. Ferrari's four motor replacements in Malaysia were due to Felipe Massa's car having required two motor changes. Christian Klien was the sole Ferrari-powered driver whose motor was trouble-free in the first pair of races, in 2006.
2. BMW's engine replacement in Spain was not due to engine failure, but damage in transit. See Spanish GP Report for details.
3. Takuma Sato (Honda) was given an engine change penalty, at the British Grand Prix, which was not due to engine failure, but to a car switch, instead. See British GP Report for details.
4. At the German Grand Prix, Sakon Yamamoto (Honda) was likewise given an engine change penalty that was not due to engine failure, but–once more–to a car switch. See German GP Report for details.
5. At the Hungarian Grand Prix, Christian Klien (Ferrari powered Red Bull) would also have been given an engine change penalty for a last minute car switch, but the team had him start from the pitlane. See Hungarian GP Report for details.