Speed and Tech in Loudoun/Dulles- speedandtechmotoring
(703) 565-4508
https://goo.gl/maps/gWLZPqZzLsZTCZLd6 they do great work and RJ has been doing it for a long time.
As for repair work - I've always gone to RRT - they are a little more expensive than some shops but not by a large amount and the work they do is top class.
https://www.rrtautomotive.com/
These shops can take care of 99% of your needs.
For bodywork- D&V Autobody has a specialist shop that does great work but if you just need exterior accessories RJ can take care of that.