With all of the massive recalls going on in America among car manufacturers, it is important to be very cautious and do your homework before buying a new or used car. Here are some interesting statistics: Lemons - Approximately 1 percent of all NEW cars sold each year are lemons, but estimates vary greatly and may be low, as manufacturers are not required to report lemons. Consumer Reports collects data on more than a million cars to publish its list of the 10 least reliable cars at 125 percent below that of the average vehicle - or worse. Click to see what they are and some might surprise you - including the Nissan Altima, the Jeep Cherokee and the Mercedes Benz CLA 250. Laws vary by state, but people who think they own a lemon must file a claim within one to two years of delivery or before reaching a set number of miles. Check your state here.