I brought a 2008 Dodge Caliber used mind you and I noticed that it Is slow to accel and I feel like I have to play with the gas pedal in order to get it to switch gears. I was doing research and found out something about a transmission filter kit. I don't know if that is my problem or not. I'm no mechanic, but I know a thing or two about cars due to my dad (which is a mechanic.) What do I do and how do I fix this my car? It only has about 144,000 miles on it.