Differentiate between import quotas and tariffs?

Generally speaking, an import quota will cause the price of the imported product to rise in anticipation that the number of say BMW's will be limited. Consumers and auto dealers know this so the price of the BMW will be increased to the level of price the market demands. A tariff on BMW imports brings revenue to the Government and at the same time causes the consumer to pay more to offset the BMW's cost to bring their product to market.