Due to financial disagreement, the last Turkish Grand Prix took place in 2011, despite earlier agreements concerning Istanbul Park. Top speed at the speed trap in 2005 was 329.5 km/h (204.8 mph) by F1 cars. In 2006 with the smaller 2.4-litre V8 engines (instead of the 3.0-litre V10s of previous years) the fastest cars reached 320 km/h (200 mph).