Two problems related to engine rattling and whining sounds have been reported for the 2013 Chevrolet Sonic. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2013 Chevrolet Sonic based on all problems reported for the 2013 Sonic.
When car is stopped, it begins to make a rattling noise, at times it can be quite loud, it also starts to vibrate and almost cut off. The noise sounds as if it is coming from the engine. The noise has been sperattic. I took the car into the dealer and they could not find anything wrong. This is quite concerning.
Jan. 7/2013 heard suttle/scraping/rattle sounds, thought I rolled over something on dark road in construction zone. Moved my car to left then really scraped on something. By next morning some oil leaked out. Had car towed to g. M. Dealer. They had main engineers trying to figure out what was causing oil to spread in engine &sonic was insanely smoking black smoke in, around. Like in black cloud with sparks coming out back of car. I got terrified, as I had just picked it up,was told they had fixed the oil leaks. Dealer still has car. 3/3/13 they told me it was fixed, but it reeked with toxic fumes, I became nauseous, throat was scratching like before. Told gm that Sonic was not fixed. Requested new car from them. They are offering me a repurchase. I don't know what that means. They have refused to extend my rental to transport my family of 5 safely.