For some people, the excitement of driving a new vehicle quickly dissipates with the emergence of a significant malfunction, defect, or other problem that wasn't part of the deal. To meet the criteria of "lemon," a vehicle must have a substantial defect that presents itself within the warranty limits, or continue to have the defect after a reasonable number of attempts to fix it. Generally speaking, when a defect occurs that is not caused by the owner after purchase- unlike, say, someone driving their car into a lake - and it impairs the use, value, or safety of the vehicle, then it's considered "substantial". If your car meets the terms of substantial defect, the dealer and/or manufacturer get a "reasonable" number of cracks at repairing it. Up to four repair attempts is commonly considered reasonable, but serious safety defects may qualify after just one attempt. A car may also be deemed a lemon if it has exceeded "x" number of days...