Gas and charcoal BBQs are two of the most popular types of outdoor grills. While both types of BBQ can provide delicious grilled food, there are some key differences between the two:

1. Fuel Source: The most obvious difference between gas and charcoal BBQ is the fuel source. Gas BBQ uses propane or natural gas as fuel, while charcoal BBQ uses charcoal or wood.

2. Convenience: Gas BBQs are generally considered more convenient than charcoal BBQs because they are easier to start and control. With a gas BBQ, you simply turn a knob to start the grill, and you can control the heat with the same knob. Charcoal BBQs require more effort to start, and it can be harder to control the temperature.

3. Flavour: Many people believe that charcoal BBQs provide better flavour than gas BBQs because charcoal and wood burn hotter and produce more smoke. The smoke produced by burning charcoal and wood infuses the food with a smoky flavour that many people enjoy.

4. Cost: Gas BBQs tend to be more expensive than charcoal BBQs, primarily because they are more complex and require more components (such as burners and gas lines). Charcoal BBQs, on the other hand, are relatively simple and can be purchased for a fraction of the cost of a gas BBQ.

5. Maintenance: Gas BBQs are generally easier to maintain than charcoal BBQs because they produce less ash and require less cleanup. Charcoal BBQs produce a lot of ash, which must be cleaned out regularly.

Ultimately, the choice between gas and charcoal BBQ comes down to personal preference. Both types of BBQ can produce delicious grilled food, so it's up to you to decide which one you prefer based on factors such as convenience, flavour, cost, and maintenance.