It was just last month that all 5 Porsche models were honored in the J.D. Power Initial Quality Survey. Now, barely 6-weeks laters, U.S. Customers have rated Porsche highest against all other marques in the 20th edition of the J.D. Power 'APEAL' (Automotive Performance, Execution and Layout) Study. The J.D. Power 'APEAL' study measures the …
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