Can somebody can correct my motivation letter

I will be very happy if somebody can check my motivation letter, English is not my native language and I need this Job.

" Following our conversation, I confirm my desire to join the x company. The large number of countries and the size of the group are very important for me. Working in a large group with a great organization,a thoroughness and seriousness that are my main motivation, which can contribute to my professional and personal future. Expatriation in a continent that I know, is a new challenge and allow me to share my expertise and my passion for cars and techniques. I would have at heart to carry out my mission in x as I have done in the past.
I hope I've managed to persuade you of the interest of my application. Pending from you, please accept, Madam, Sir, my sincere greetings."

Thank you for the help, best regards.