Deciding whether to keep or sell your current car, particularly if you've had to invest significant sums in keeping it running, is always something of a balancing act. Repairs are an inevitability of car ownership, as even the most reliable cars will have something go wrong or wear out, so it is a case of considering the costs involved against the vehicle's value and how well it suits your current needs. With 80,000 miles on it we would estimate your car is still worth around £7000 to £8000 so it still has many years left in it as well as value. If you do intend to keep the car we would suggest having the timing belt changed, even if this another expense, but with that taken care of you can be more confident in its potential reliability over the coming years. If you choose to sell it and buy something else, you could be changing it for another car that will have its own problems.