Audi has gone awry

I drive an Audi. I’ve been driving an Audi for years. My first Audi was an A3 – very good. With a young family I then moved on to the Audi A4 and later and Audi A4 Avanti estate which I loved but realising I didn’t need all the space went back to an Audi A4.
Big mistake – it now appears.
When I got the car it didn’t seem as responsive as the Avanti. It was sluggish, didn’t react the way the old car did and was basically pants. Eventually, I was told by a nice man from the Automobile Association, after it broke down, that the throttle flap was knackered after one year. Audi replaced it.
But hey – it’s just a car and I am not a petrol head.
However, a week ago the in-car computer told me it needed to go in for a service. And it was sounding a bit ropey. So in it went to the nice people at Audi Wakefield in Yorkshire.
So far so good. When you have an Audi serviced they are very good at updating you on progress and Audi Wakefield have excellent. Here is what followed:

Audi Wakefield: You need new front tyres. Me: Yes. I thought I would. Go ahead with the new tyres.
Audi Wakefield: The fly wheel isn’t working. We need to put a new one in. Me: Yes go ahead and sort it out. I need my car.
Audi Wakefield: We’ve replaced the flywheel but it still not sounding good. We need to look into it further. Me: So when will I get the car back?
Audi Wakefield: We don’t know. We need to look further. Me: Well can I have a courtesy car?
Audi Wakefield: No – we have nothing available for two weeks. Me: Right.

I should point out at this stage that Audi Wakefield have been brilliant throughout. Then…

Me: So what’s happening? Audi Wakefield: We’re stripping down the engine to see what the problem is.

This sound bad to me.

Me: So I won’t get the car back. Audi Wakefield: No. It’s a big job.

Tired of using public transport I am now using a hire car as I have to go to my parents to take my dad into respite care – those of you who follow me know what I am talking about. Anyway the conversation resumes today.

Me: So where are we? Audi Wakefield: [Long silence while service operative goes off to talk to engineer and returns to call three minutes later after me listening to tedious corporate messages from Audi]: The mechanic has found a sheered off bolt and a few other things wrong.
Me: Bloody Hell! What does that mean? Audi Wakefield: We need to look into it further but you might need a new engine.
Me: What? And how much is that going to cost – it’s still under warranty! Audi Wakefield: We don’t know. We’ll be in touch..

I don’t normally blog about personal stuff but this is just too much after being an Audi driver for 10 years. I’m told there is a manufacturing fault but in the meantime I have no car, am paying out for a hire car and have lots of travel to do.
Should I dump Audi in the future? Get a Toyota perhaps? What do you think?