Summit Automotive Chrysler Dodge Jeep RAM

Staff

Management

  • Matt Weinberg

    Matt Weinberg

    President

    (920) 602-2210
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    Matt Weinberg

    Matt Weinberg

    President

    Matt was born and raised in Wisconsin. He graduated from UW Stout where he met his wife.

    After college they spent 9 years in California before moving back to Wisconsin to be close to family.

    Matt enjoys all things outdoors: golfing, boating, sports, hiking.

    Reach out to Matt for anything you might need!

  • Mike Berg

    Mike Berg

    CEO

    (920) 238-3966
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    Mike Berg

    Mike Berg

    CEO

    Mike is CEO and owner of Summit Automotive Chrysler Dodge Jeep RAM. He started in the car business when his Grandfather, Bill Gores (Founder of Holiday) asked him to wash cars in 1974. He’s STILL here!

    Mike and his wife, Nancy have 3 children. He enjoys hunting, boating, paddle boarding and spending time with his family! He’s a life long Packer fan who loves going to games!

    Call Mike with any questions or anything he can help you with!

  • Joel Zerbel

    Joel Zerbel

    Chief Operating Officer

    (920) 238-3966
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    Joel Zerbel

    Joel Zerbel

    Chief Operating Officer

    Joel is Chief Operating Officer at Summit Automotive Chrysler Dodge Jeep RAMe. Joel has over 30 years of automobile experience. Joel and his wife Deb have 4 children, Sam, Sarah, Grace and Isaiah and a Golden Retriever Jasper. Deb is a Special Education teacher locally. In his spare time, he enjoys hunting, skiing and spending time in northern Wisconsin with his family.

    Joel believes it is important to give back to the communities that they serve. He is involved with several local organizations and charities that provide assistance and programs to local children and families in need.

    A strong belief if his is that you should give back to the communities they serve. Customer service and employee satisfaction are top priorities at Summit Automotive Chrysler Dodge Jeep RAM.

    If there’s anything he can do for you, give him a call at (920) 238-3966

  • Ryan Knueppel

    Ryan Knueppel

    General Manager

    (920) 517-8628
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    Ryan Knueppel

    Ryan Knueppel

    General Manager

    Ryan has been in the automotive industry since 2007, and has developed a true passion for customer service. He was born and raised in the Fond du Lac area but also lived in Naples, Florida for just over a decade! While there, he worked for the Ritz Carlton Hotel Company where he mastered the art of true customer service. He is happily married and has two beautiful daughters that he spends as much time with as possible. In his free time he loves to golf and fish every chance he gets.

  • Mark Phillips

    Mark Phillips

    Used Car Director

    (920) 251-1152
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    Mark Phillips

    Mark Phillips

    Used Car Director

    Mark has been in the Automotive Industry since 2000. He has an extensive background in trucks. Mark grew up in Oakfield and has lived in FL since 2006. When he’s not at work, he enjoys home improvement projects and of course, golfing!

  • Tim Brenner

    Tim Brenner

    Finance Director

    (920) 238-3966
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    Tim Brenner

    Tim Brenner

    Finance Director

    Tim is the Finance Director here at Summit Automotive Chrysler Dodge Jeep RAM. He started working in the automotive industry in 1991, and has worked as a Business Manager since 1996. He grew up in St. Peter and now resides in the Fond du Lac area. When he is not at work, he enjoys spending time with his son Riley.

  • Andrew Stern

    Andrew Stern

    General Sales Manager

    (920) 238-3966
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    Andrew Stern

    Andrew Stern

    General Sales Manager

    Andrew has been in the automotive industry since 2007. He takes pride in giving each guest a great experience and to make finding your next vehicle enjoyable. He received his bachelor’s degree from UW-Oshkosh and is a Titan football alumni. Hail Titans! He enjoys soaking up the sun on the golf course, Wisconsin sports teams, and spending time with family.

  • Ryan Mikle

    Ryan Mikle

    Used Car Manager

    (920) 948-7539
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    Ryan Mikle

    Ryan Mikle

    Used Car Manager

    Ryan has been in the automotive industry since 2010. He was born and raised in the Fond du Lac area. Ryan has a background specializing in all types of used vehicles, with a true passion for trucks, imports, and specialty vehicles. He strives in taking great care of our customers and to provide the best car buying experience possible. In his free time he enjoys being on the water, hunting, golfing, and trying new things that challenge him!

  • Brett Schmitz

    Brett Schmitz

    Used Inventory Production Manager

    (920) 397-0783
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    Brett Schmitz

    Brett Schmitz

    Used Inventory Production Manager

    Brett handles the website and all inventory including pictures and videos. Some other duties include network administrator and used vehicle expediter.

    He is a graduate of the University of Wisconsin Whitewater where he majored in Computer End-User Technologies. Brett began his career in the Automotive Industry full time in 2006. He has a large automobile knowledge spanning many makes, models and years. Brett grew up in Chilton, Wisconsin and moved to Fond du Lac in 2006. Brett has been with Summit Automotive Chrysler Dodge Jeep RAM since 2013 and enjoys the fast pace of the car market and likes the challenges that arise on a daily basis. He also created and manages the dealership’s youtube channel that has over 28+ million views, 43,000+ subscribers, and gets over 11,500 views a day! You can check out his channel at Summit Automotive Chrysler Dodge Jeep RAM Youtube Channel. Remember to like, subscribe and share. In his spare time he enjoys spending time with his wife Ashley and their twin boys David and Taylor.

  • Jamie Hansen

    Jamie Hansen

    Commercial/Fleet Manager

    (920) 579-2921
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    Jamie Hansen

    Jamie Hansen

    Commercial/Fleet Manager

    Jamie has been in the automotive industry for 12 years. 9 of which she spent as a sales representative upfitting work trucks.

    She has a huge passion for animals. When she is not at work, she gardens, cooks, hikes with her dogs and spending time with her family. They enjoy traveling, being outdoors and riding motorcyles.

  • Mary Schulz

    Mary Schulz

    Marketing Manager

    920-318-6654
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    Mary Schulz

    Mary Schulz

    Marketing Manager

    Mary has over 10 years of community outreach experience and is passionate about finding creative ways to connect with our customers and support the communities we serve.

    Whether it’s through local events, partnerships, or engaging with social media campaigns, she loves turning ideas into meaningful action. Her goal is to help make a positive impact both online and in person.

    Outside of work, Mary enjoys traveling, camping, and spending time with family.

Finance

  • Dave Reilly

    Dave Reilly

    Business Manager

    (920) 238-3966
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    Dave Reilly

    Dave Reilly

    Business Manager

    Dave has been in the automotive industry since 2004 with most of them as a Business Manager. He is dedicated to go above and beyond to make sure your customer experience is positive. When not in the office he enjoys road biking with his wife Jaime, hiking with his dog Bailey and spending time with his daughter (and adventure buddy) Lauren, his son Max and his grandson Asher.

  • Colin Choby

    Colin Choby

    Business Manager

    (262) 353-0040
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    Colin Choby

    Colin Choby

    Business Manager

    Colin has been with Summit Automotive since 2018. He grew up in Lake Geneva and now resides in West Bend. When Colin is not hard at work getting you the best loan possible he enjoys spending time with his wife and 4 children at home or finding some twisty roads to ride his motorcycle on!

Sales

  • Marty Krepsky

    Marty Krepsky

    Product Specialist

    920-579-2937
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    Marty Krepsky

    Marty Krepsky

    Product Specialist

    Marty has been in the Automotive business for over 30 years with an emphasis on customer service and providing a great buying experience. He has experience selling all brands and will make sure you get the type of vehicle best suited to your needs. He has held positions from Sales Manager to General Manager so you can be assured he knows his business and can use that experience to make your visit productive and without hassle. He is very excited about being the most tenured product specialist at Summit Automotive Chrysler Dodge Jeep RAM because of the friendly atmosphere and “customer comes first” attitude.

  • Jesse Slechta

    Jesse Slechta

    Product Specialist

    (920) 238-3966
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    Jesse Slechta

    Jesse Slechta

    Product Specialist

    Jesse has been selling cars since he was 19 and is a car enthusiast – performance cars, trucks, etc. you name it, he probably knows all about it!

    Jesse lived in Australia when he was 3 months old up until he was 7. In his free time he loves spending time with family and being on the lake when he can.

  • Mason Aird

    Mason Aird

    Product Specialist

    (920) 238-3966
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    Mason Aird

    Mason Aird

    Product Specialist

    Mason started at Summit Automotive Chrysler Dodge Jeep RAM in 2018 as a part time detailer at the age of 16. He lived in Oshkosh for 5 years and then moved to Fond du Lac.

    When Mason is not at work he is usually hanging out with his dog. He also enjoys everything outdoors including Hunting, Snowmobiling, Boating, and Golf.

  • Michael Marusich

    Michael Marusich

    Product Specialist

    (920) 238-3966
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    Michael Marusich

    Michael Marusich

    Product Specialist

    Michael has been in sales since 2019 and has loved every bit of it. He loves working with customers to find them the perfect vehicle that fits their needs.

    In his spare time he enjoys spending time with his two daughters, his wife, and two dogs. In the summer months he enjoys going camping up north.

  • Ryan Soukup

    Ryan Soukup

    Product Specialist

    (920) 921-0850
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    Ryan Soukup

    Ryan Soukup

    Product Specialist

    Ryan started in the industry in 2013 and joined Summit Automotive in 2023! He loves making sure customers find the perfect new or used vehicle for them and joy every minute of the process. Ryan has won Best of Fond du Lac – Best Car Salesperson in 2024 and 2025.

    In his spare time, he enjoys spending time with his wife Alexandria and his son Braxton. He enjoys playing in his church softball league, spending time up at his land in Coloma, and golfing whenever he can.

     

  • Logan McDermott

    Logan McDermott

    Product Specialist

    (920) 921-0850
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    Logan McDermott

    Logan McDermott

    Product Specialist

    Logan has over a decade of experience in sales and customer service, owing a lot of success to his customer-first, stress-free approach. He is well known for making the customer experience as easy and straightforward as possible.

    Logan is a Fond du Lac native and loves spending as much time as possible outdoors in the summer, whether it’s hiking, biking, or golfing. In the winter months you can find him cheering on the Packers or reading a book.

  • Chris Kuklinski

    Chris Kuklinski

    Product Specialist

    (920) 921-0850
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    Chris Kuklinski

    Chris Kuklinski

    Product Specialist

    Chris has always had a passion for vehicles, especially sport cars. He’s been helping others since 2020, to find the right vehicle for them.

    He’s been a Wisconsin resident all his life, and enjoys looking and learning more about new vehicles. He enjoys spending time camping with his family and riding motorcycles with his younger brother.

  • Eric Agnew

    Eric Agnew

    Product Specialist

    (920) 921-0850
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    Eric Agnew

    Eric Agnew

    Product Specialist

    Eric has been in the customer service and sales for 25 years and loves working with people. He has spent 9 years in the automotive industry and has developed a love for working with people and making sure to deliver a positive experience. Eric was born and raised in Fond du Lac. He is married with three wonderful children 2 girls and a boy. He spends his free time creating photography and videography.

  • Brian  Pahnke

    Brian Pahnke

    Product Specialist

    920-960-4455
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    Brian  Pahnke

    Brian Pahnke

    Product Specialist

    With experience in the automotive industry since 2021, I bring strong product knowledge and a diverse background that helps me understand vehicles from every angle. My priority is always my customers-making sure they feel confident, informed, and enjoy a smooth, efficient buying process. I go the extra mile to meet individual needs and make every purchase a positive experience.
    When I’m not at the dealership, I enjoy spending time with my wife, daughter, and our dog. I love camping, fishing, boating, and connecting with people.
  • Austin Kahlow

    Austin Kahlow

    Lot Attendant/Buyer

    (920) 921-0850
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    Austin Kahlow

    Austin Kahlow

    Lot Attendant/Buyer

    Austin was born and raised in Fond du Lac, WI. Growing up, he lived right next to Summit and started working part-time detailing back in March of 2016. He progressed his way up to full-time not long after graduating from WLA in 2017, and started Lot Managing back in 2020 – present, and is now a Buyer.
    When he’s not at work he enjoys anything and everything outdoors such as hunting, fishing and hiking as well as golfing and traveling to different states around the U.S.
  • Alex Soukup

    Alex Soukup

    BDC Specialist

    (920) 921-0850
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    Alex Soukup

    Alex Soukup

    BDC Specialist

    Alex worked in healthcare for over 15 years and decided it was time for a change. This is her first job in the Automotive Industry, but she’s been working in customer service for many years.

    When she’s not at work she loves baking, crafting, dancing, and going to concerts. She also cherishes the time she gets to spend with her husband Ryan, son Braxton, and cat Pepper.

Service

  • Jennifer Preston

    Jennifer Preston

    Service Director

    (920) 322-7556
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    Jennifer Preston

    Jennifer Preston

    Service Director

    Jennifer is the Summit Automotive Service Director and is new to the Fond du lac community, relocating from Minneapolis, MN. A driven leader, working to excel at client experience by building a strong team putting customers at the forefront of the service department. In her free time, she loves spending time with her kids and working in the garden.

  • Geoff Kuitert

    Geoff Kuitert

    Service Writer

    (920) 322-7556
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    Geoff Kuitert

    Geoff Kuitert

    Service Writer

    Born and raised in Fond du Lac, Geoff graduated from UW-Oshkosh in December 2008 and started as the Manager of the Express Lube in January 2009. He has been a part of the dealership since 2000. He enjoys playing basketball, golf and a good movie in his spare time.

  • John Vannini

    John Vannini

    Service Writer

    (920) 921-0850
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    John Vannini

    John Vannini

    Service Writer

    John started in the automotive field in the mid 90’s in a Parts Department and moved to a new position as a service advisor in 1997 at a Mitsubishi dealer in Northern Illinois. He worked his way up to a Mega Dealer Service Advisor. John then moved to Fond du Lac in 2003 and was an advisor with Bergstrom Saturn. After they closed, he had a brief stint as an advisor for Ernie Von Schledorn in Lomira and Hansens Auto care for 18 years.

    His wife and him enjoy camping and love Door County! They also enjoy time doing yard work and enjoying their salt water swimming pool. If there’s a Packer game, they enjoy hosting Packer Parties with family and friends.
  • Jace Braun

    Jace Braun

    Express Lube Advisor

    (920) 322-7556
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    Jace Braun

    Jace Braun

    Express Lube Advisor

    Jace was born and raised in Fond du Lac. He has been in the automotive industry since 2016, ranging from express lane, detailing, supervising, and service advisor. He enjoys music festivals/concerts, working on his project car, and downhill boarding.

  • Matt Richardson

    Matt Richardson

    Express Lube Advisor

    (920) 322-7556
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    Matt Richardson

    Matt Richardson

    Express Lube Advisor

    Matt was born and raised in Fond du Lac, WI. He has been in the automotive industry since 2020, starting as a Technician to now being a Service Advisor.

    In his free time he enjoys spending time with his family and fiance Sara. If he’s not at work he’s at the local pond/lake fishing or fixing his car.

  • Nicole Lyon

    Nicole Lyon

    Service BDC

    (920)322-7556
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    Nicole Lyon

    Nicole Lyon

    Service BDC

    Nicole is a Beaver Dam, Wisconsin native and a 2014 graduate of the University of Wisconsin–Oshkosh. As the Service BDC at Summit Automotive, she brings a strong background in customer service and a passion for helping others. Nicole is dedicated to ensuring every customer has a smooth, convenient, and positive experience when visiting the service department.
    She takes pride in building strong relationships with customers and supporting the service team to provide the high level of care Summit Automotive is known for. Outside of work, Nicole enjoys spending time with family and friends, staying active, and being involved in the local community.

Parts

  • Jordan Kollmorgan

    Jordan Kollmorgan

    Parts Manager

    920-322-9647
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    Jordan Kollmorgan

    Jordan Kollmorgan

    Parts Manager

    Jordan is a native of Fond du Lac. He has been with Summit Automotive Chrysler Dodge Jeep RAM since 2013. He enjoys golfing and going to concerts. Jordan loves the outdoors when he is not at Summit Automotive Chrysler Dodge Jeep RAM providing excellent parts customer service.

  • Sam Eichner

    Sam Eichner

    Parts Advisor

    920-322-9647
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    Sam Eichner

    Sam Eichner

    Parts Advisor

    Sam was born and raised in Jackson, WI. He has been in the Automotive Industry since 2012. He went to Moraine Park where he studied Automotive Technology.

    In his free time he enjoys playing cribbage with his girlfriend Patty. He will never pass up a game of corn hole when there is an opportunity. He also bowls in a league in Oshkosh on Friday nights. Sam loves spending time with family, especially with nieces Olive and Margot, and nephew Arrow.

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Summit Automotive Chrysler Dodge Jeep RAM 43.76061853361723, -88.47771062413098.