CREATE TABLE table_66549 ("Manufacturer" TEXT, "Transmission" TEXT, "Engine Capacity" FLOAT, "Fuel Type" TEXT, "L/100km Urban  ( Cold ) " FLOAT, "L/100km Extra-Urban" FLOAT, "L/100km Combined" FLOAT, "mpg-UK Urban  ( Cold ) " FLOAT, "mpg-UK Extra-Urban" FLOAT, "mpg-UK Combined" FLOAT, "mpg-US Urban" FLOAT, "mpg-US Extra-Urban" FLOAT, "mpg-US Combined" FLOAT, "CO 2 g/km" FLOAT, "Green Rating" TEXT)

What's the CO2 g/km of a Fiat running on diesel with the L/100km urban more than 6.3 and an mpg-UK combined of 43.5?
SELECT COUNT("CO 2 g/km") FROM table_66549 WHERE "Fuel Type" = 'diesel' AND "Manufacturer" = 'fiat' AND "L/100km Urban (Cold)" > '6.3' AND "mpg-UK Combined" = '43.5'
SELECT COUNT("CO 2 g/km") FROM "table_66549" WHERE "Fuel Type" = 'diesel' AND "L/100km Urban (Cold)" > '6.3' AND "Manufacturer" = 'fiat' AND "mpg-UK Combined" = '43.5'