Anyone in the DFW area heard of 5Th Gear Automotive in Lewisville,Tx.
They specialize in Porsche, BMW, Mercedes, Audi & VW. All the review I read are positive. Their facility are top notch from what I see on their website (fifthgear.biz). If their price are any less than RAC, I might consider them & it's closer to the house.

 

I have heard really good things also.

 

Auto Hans with Alex in Addison are great for German cars. Innovative Autosport's Charlie Lacey in Carrolton is Porsche only and is an ex head mechanic for Park Place Porsche. His prices and work are great.

 

Fifth Gear is good but not cheaper than RAC. Mark at Fifth Gear came from RAC last year and does a lot of the Porsche work. They are good guys, as are Hans and the guys at RAC.