Hey ok I have a 2000 sunfire sedan and when I reach 120 km/h it starts to smell like rotten eggs in my car. Is that me or the other cars? I need to know... Thanx

Often its sulfur content in the fuel. Try different brands of gas, if you haven't already.

Its usually your Cat making that smell... other cars do it... i know mine smells like it at times.

yeah use a different gas company, BUT NOT CITGO! their gas is horrible. Also just cause gas is really cheap doesnt mean its good for your car. Most little gas stations that are no names but sell gas for like 10 cents less a gallon than the big places use alcohol and other non healthy things for your engine. If i use cheap gas, i can smell rotten eggs too.