Is ford Capri 2.8 injection good first car?

Looking at ones for about £7000 with about 70000 miles

Would it be reliable?
If not, is it easy/expensive to keep going?

No.
Not even slightly.

I realise you think it looks cool but old cars need looking after either by professional garages who charge £100+ an hour, or people with a shed full of tools and the years of experience that you won't have yet.

Won't be reliable or cheap, have you investigated the cost of insurance yet? You're in for a shock…

I told you yesterday…

NO, DON't BE STUPID

Are you going to keep asking the same question every day until you end up getting a fiesta or corsa?

Haha just noticed you are only 15/16… Keep dreaming kid, go out and play, get a girlfriend etc etc THEN when your old enough to drive you may have more common sense and will end up getting a little 1lt shopping trolley.

If you are a young driver it will be very expensive if not impossible to insure a 2.8i

No, not suitable, the long bonnet makes safe driving difficult at junctions.
Insurance will be prohibitive. Capris were the among the most stolen cars when current, and can't have got any harder.
Even the youngest Capri is over 27 years old and likely have suffered from rust and been repaired many times,

Fuel consumption is also a problem, you would expect less than 20mpg!

They were not great cars when new.
Old cars need a lot of work to keep going and the 2.8i was expensive on fuel when new.
You get to know the staff at your local filling station very well. Expect at best 17mpg.
Parts are now difficult and they are best as weekend cars.
The insurance for a daily driver will be high.

Engine wise it's had an unstressed life, the 2.8 is large and powerfull for the 1200kg of car it has to move.

But it is 30+ years old and will need maintenance and by maintenance, i mean maintenance like full engine/gearbox rebuild, the parts are on back order, welding in short it may need costly repairs.

It's a ford so it's gonna break down the second you drive it so no

My first car was a ford zx2 with a 2.8. Same motor as a capri but different body. They are very reliable and rarely break down, BUT when they do break down it is very costly. If you keep an eye on your fluids and keep up with maintenance, it should last you to about the 275000 mile mark or beyond. My car had 298000 and was still running when I sold her.