vauxhall ASTRA TwinTop fuel filters Available Here. Fuel filters do their job by removing dirt and other solid contaminants from the petrol or diesel supplied to your vehicle’s engine. With a clogged or dirty filter, you might begin to see symptoms such as loss of engine power, reduced fuel economy or even stalling and misfiring. Depending on the make and model, fuel filters can need replacing from as little as 9,000km although some can last up to 90,000km in newer vehicles. Select a superior grade replacement from our stock at MicksGarage.com. We’ll even help you find the right products, with a make/model drop down menu that’s easy to use.