In the UK, the average cost for replacing a fuel injector typically ranges from £120 to £160. However, this price can vary significantly based on several factors, including the specific make and model of your vehicle, the number of fuel injectors that need replacement, and your geographical location. For instance, luxury or high-performance vehicles may require more expensive injectors, while standard models might have more affordable options. Additionally, labor costs can differ from one garage to another, further influencing the total expense. It's advisable to consult a detailed price guide or seek quotes from local mechanics to get a more accurate estimate tailored to your vehicle's needs.