The selection of the best used family car depends on many factors such as budget, family needs, preferred driving style, and equipment requirements. Here are a few popular options to consider:

1. Škoda Octavia: The Octavia is known for its spaciousness, reliability, and affordability. It offers a large boot space, comfortable seats, and a wide range of engines.

2. Volkswagen Passat: The Passat is a popular choice for families due to its comfortable interior, excellent driving dynamics, and wide range of available features.

3. Honda Accord: The Accord is known for its reliability, efficient engines, and excellent handling. It offers a spacious interior and a good combination of comfort and performance.

4. Toyota Avensis: The Avensis is another reliable choice with low operating costs. It offers a spacious interior, a wide range of engines, and good safety features.

5. Ford Mondeo: The Mondeo is known for its comfort, spaciousness, and dynamic handling. It also offers a wide range of available engines and equipment

Before making a purchase, it's important to conduct thorough research and test drives to ensure that the chosen car meets your needs and expectations. It's also recommended to check the vehicle's history and have it inspected by an independent technician to ensure that it's in good condition.