A DUI can be charged as a felony if there is great bodily. Great bodily injury can occur to your passenger, a driver or passenger in another vehicle or a pedestrian. Also, if you are arrested for a 4th or subsequent DUI within ten years, that can also be charged as a felony. Obviously, a felony is much more serious than misdemeanor DUI and it can have severe consequences including a state prison sentence. The court process for a felony DUI is slightly different. You have a lot more to lose and, therefore, a lot more to gain by having a skilled DUI lawyer on your side to protect your rights.