Advertising ideas for my car workshop?

[Kibi]

I need ideas how to advertise for my car workshop not such as flyer's, website, radio.
My workshop offers MOT's, Auto body repairs - such as respraying cars, repairing dents, scratches polishing. Also we do all mechanical repairs from replacing engines, gearboxes, servicing, brakes basically everything. Also we do welding, repairing exhausts. Also we have a tow truck. Sell new and part worn tyres. Also we have a snap on diagnostic machine and take on electrical work we have a specialist who can take on all electrical jobs, more importantly all our work is guaranteed all quality parts.
But in more detail like such as what would people like to know such as what would people like to know?
What would you like to know before you hand your car in to a workshop?
What makes you give that car in to that shop?
Also what can I offer such as special offers? Maybe a percentage off if they bring back a flyer "5% off with this flyer"
referral discounts if their friend or family come next time they get another X% off?
Any idea is welcome also help on the design

Thanks