Assuming you are talking about a standard sized car, most cars can run for around 1000 miles on one quart of oil. However, this number will vary depending on the type of engine and how well maintained the car is. For example, if a car has a turbocharged engine or is frequently driven in stop-and-go traffic, it may only be able to travel for 500 miles on one quart of oil. Additionally, if a car's engine is not properly maintained, it may only be able to travel for 200 miles or less on one quart of oil.