The Midwestern Auto Group Team

Our Porsche Team

Let us introduce you to our staff, show you some of our special vehicle offers and take you through our complete line of new, Certified pre-owned and used inventory. We can help you find exactly what you are looking for.

We know your time is valuable. We are sure you will find our site a fast and convenient way to research and find a vehicle that's right for you. If we can be of any assistance while visiting us online, send us an email and we will promptly reply.We look forward to serving you!


Mark Brentlinger | Dealer Principal / General Manager

John  Viel

John Viel | Porsche Sales Manager

John, a Navy veteran, was born and raised in Maryland. He moved to Ohio in 1996 and this is when he began his career in the auto industry. John worked in finance here at Midwestern Auto Group from 2002 to 2006 and returned in 2016 after spending alittle over 10 years in finance at another luxury dealership. 

Outside of work, John enjoys riding his motorcycle anywhere the road takes him.

Phone: 614.389.5579 • Email:

Shawn Sheppard

Shawn Sheppard | Porsche Brand Ambassador

Entered car business 4/15/79 with a partner in a company called MyKar Inc. and sold protective chemicals to new car dealers till 1985. 1985 to 1996 sold custom wheels to new car dealers and telemarketers across the USA. 1996 to present, retail car sales with Highline sales activity beginning 1999 including Aston Martin, Bentley, Rolls-Royce, Ferrari, Lotus, Maserati and Porsche. Concentration last 5 years on Porsche with a tremendous passion for the brand. Would love to help clients experience this terrific lineup!

Phone: 614.889.2571 • Email:

Michael Finneran

Michael Finneran | Sales & Leasing Specialist

Mike has represented the Porsche Brand for 30 years here at MAG. When asked his favorite thing about the Porsche Brand, Mike said “the driving experience”. He says they are easy yet fun to drive. Having owned only Porsche cars for the last 20 years Mike also believes in their dependability. His favorite Porsche was the 1989 911 Targa. Mike loves traveling all over the country, but frequently visits New York and California. He also enjoys visiting local restaurants with his family.

Phone: 614.889.2571 • Email:

Vince Cordova

Vince Cordova | Finance Manager

In 1988 Vince started his auto career, with auto finance in 1992, joining our team in 2011. He is known for constantly exceeding customers expectations during both the delivery and follow up process. Vince says the clients are his favorite thing about the Porsche Brand. He finds it easy to relate to the Porsche buyer because they are both performance driven. Vince loves the 911 Turbo “Whale-Tail” coincidentally it was also the first Porsche he delivered. Outside of work Vince likes to spend time with his family and friends. He will enjoy the occasional BBQ, social function, or a game of golf.

Phone: 614.389.5720 • Email:

Ron Hensley

Ron Hensley | Porsche Service Manager

Ron started with MAG in 2014.  He has 24 years in automotive service and is a Porsche Certified Service Manager.  He also Manages all nine luxury brands here for MAG.

Outside of work Ron enjoys playing golf, and spending time with his wife and three children.

Contact directly at:   614-389-5583

Phone: 614.889.2571 • Email:

Steve Fischer

Steve Fischer | Parts Manager

Steve came on board with MAG in 2007, and is fully certified in Porsche Parts. He has been working in the auto industry since 1979. Exclusivity is his favorite thing about the Porsche Brand, in his eyes there is no substitute. When asked his favorite Porsche Steve replied simply “911”. Steve enjoys spending time with his family, being involved with his son's youth rodeo, and hunting.

Phone: 614.389.5630 • Email: