I own at 54 Reg Avensis D4D T4 Hatchback. I believe it has a bit of a factory fitted TTE body kit on it. It has covered 155,000 miles. Tyres are 215/45/17 I always warm it up for around 5 mins in the mornings and do the same journey and mileage on a regular basis and always fill the tank up. I would say 80% is motorway mileage. I find that if I use BP Ultimate diesel I get around 465-475 miles on a full tank. Computer average reading around 48mpg. If I use Esso diesel, I get around 44mpg average Once I used Supermarket fuel and it did not suit my car at all, the numbers dipped badly. I wouldn't touch supermarket fuel ever again. Long motorway drives get me up to 55mpg average. I have had my car for 7 years and its never been below 42 mpg average. I get it serviced every 7,000 miles by a mechanic friend of mine. I do not use genuine Toyota bits for small servicing and have been using Blueprint filters. for the past 6 years. Over the 7 years I have had the following done: EGR Valve at 145,000 miles Starter Motor 145,000 miles Timing belt at 70,000 & 140,000 Long life coolant at 120,000 miles Oil, air, fuel, filter change every 7,000 miles No clutch or exhust issues. No rattle or vibrations anywhere. Cabin is very quiet and so is engine. Can't see why it won't do 300,000 miles if I continue to use it in the same sensible way I have been. The only issue I have had was with the air con. Once there was a major leak and Toyota failed to find it at 2 attempts and just kept changing pipes for no reason. Then I took it to an air con expert who found it within a few minutes. Also the compressor clutch had issues, that normally requires for the compressor to be replaced at £800. I managed to find another air con specialist who opened it up and fixed it for around £350 with 12 months warranty and thats with full air con system service and re-gas. Apart from anything that needs doing this car has only required the regular maintenance every year at around £75. The car has absolutely no resale value now. but the performance, interior and exterior condition would match anything that's even 5 years newer than it, so I wouldn't even think about changing it for a newer car.