A mechanical fuel dispenser uses rotating dials and gears to measure and display fuel volume and price. These models are reliable but limited in features. In contrast, an electronic fuel dispenser uses digital flow meters, sensors, and microprocessors to measure fuel more precisely.
Electronic fuel dispensers support advanced features like automated calibration, digital displays, card payments, and remote monitoring. While mechanical dispensers are still found in some rural areas, electronic dispensers dominate modern gas stations due to their accuracy and convenience.