http://www.environmentalgraffiti.com/business/suv-owners-must-pay-50-per-day-to-drive-in-london/752

Vehicles in band G, those that emit more than 225 grams of CO2 per kilometre, will pay a whopping 25($50) every day to enter the congestion zone. This will mostly affect heavy 44 vehicles. Most other vehicles will continue to pay the daily charge of 8($16).