Ford Fiesta Mark 7: 1.6 Duratec Petrol vs 1.6 TDCi PSA/Ford?

I'm looking to buy a 2008-12 Fiesta Zetec S trim and wondered which engine is best. I will be buying the car on around 85000 miles.

Which engine is more reliable and can go to higher mileage (>125,000) easier? What are common issues on both engines? What are common issues with the MK7 Fiesta in general? What's real world mpg (I'm aware this varies person to person but would still like to know)?

Loud exhaust for 1.0L eco boost ford fiesta?

Hi, i have the 2015 Ford Fiesta 1.0L ecoboost & i love it, it's just too quiet!
after searching for what feels like years for new exhaust systems i can't find one which i think will be great for me.
i want something loud and 'out there' but i don't wanna be spending £700+ on one.
i want something with a deep growl which is noticeable with maybe some pops & bangs. If anyone can help please do. UK based.

What's better. Manual or automatic?

I'm about to get my 1st car next month and i have the option to choose between a manual and a automatic for the ford fiesta eco-boost, anyone know the pros and cons of them both, it will really be a big help

Ford fiesta or fiat panda?

I'm looking to buy my first car with the budget of £15000 which i have from savings over the years. I'm a 17 year old male from london and i'm using my parents car which is a 2009 vw polo but its so unreliable and i need a car that reliable so i can take me and my friends to school. I really like the fiat panda, even though everyone says it looks horrible, but i think it looks cute and me and my mum have already test driven it and i like it alot (i would buy it new). My second option is a second hand ford fiesta which i don't like as much but my mum says that people will laugh at me in the panda, i'm straight btw. I have seen a fiesta and they look really nice and is better built than a panda but me and the fiat panda have a special connection. My mum has told me that i might regret getting a panda in a few years time since this is the only car i'm getting until i can afford one myself and pandas lose their value very quickly unlike the fiesta. I don't know WHAT TO DO, SHOULD I FOLLOW MY BRAIN (FIESTA) OR MY HEART (PANDA)