At Kranz Motorcars, German vehicle performance tuning starts with the same thing every great build needs: a healthy car. Owner and master technician Joe Kranz has spent more than 25 years working on Audi, Volkswagen, Porsche, Mercedes-Benz, and BMW vehicles, and our shop in Kennett Square, PA is where local enthusiasts bring the cars they love to drive. Whether you want a sharper daily driver or more from your weekend car, our approach to performance tuning in Kennett Square adds power and response without giving up the reliability you count on.

Performance Tuning Built on Mechanical Health
Tuning a car that is overdue for maintenance is a shortcut that rarely ends well. Before any upgrade, we inspect the systems that make power and keep it under control, including ignition, fuel delivery, boost and vacuum lines, cooling, and the drivetrain.
If something needs attention, we handle it first through our German vehicle repairs and maintenance service. That way your upgrades are built on a solid foundation instead of covering up a problem that will cost more later.
Performance Upgrades for Audi, VW, BMW, Porsche & Mercedes
Every platform responds differently, so we build a plan around your car, your goals, and the way you drive. Common areas we talk through with customers include:
- Engine and transmission software tuning
- Intake, exhaust, and cooling upgrades that support added power
- Suspension, alignment, and handling improvements
- Brake upgrades matched to your power level and driving style
- Supporting maintenance such as spark plugs, ignition coils, and fluids
You will always get an honest recommendation on what makes sense for your vehicle, including when an upgrade is not worth the money.

Protecting Your Warranty and Your Investment
Many performance-minded owners also want to keep their factory coverage in good standing. We can explain how specific modifications may affect your coverage and keep your car on schedule with factory service intervals and warranty services performed to manufacturer standards. The result is a car that is more fun to drive and still cared for the right way.
Performance Tuning FAQs
When it is done on a healthy vehicle with quality parts and a sensible plan, performance tuning can be reliable for everyday driving. That is why Kranz Motorcars inspects your car and addresses any maintenance needs before making changes.
We focus on Audi, Volkswagen, Porsche, Mercedes-Benz, and BMW vehicles, the same European makes we repair and maintain every day at our Kennett Square, PA shop.
Some modifications can affect emissions equipment or inspection results. As a certified PA State Inspection and Emissions facility, Kranz Motorcars can help you plan upgrades with inspection requirements in mind.
Call (484) 731-2656 or schedule an appointment. We will talk through your goals, inspect your vehicle, and recommend a plan that fits your car and budget.
Schedule Performance Tuning in Kennett Square, PA
Ready to get more from your Audi, VW, Porsche, Mercedes, or BMW? Visit Kranz Motorcars at 432 S Walnut Street, Kennett Square, PA 19348, or call (484) 731-2656. Read what local drivers say in our customer reviews, then schedule your appointment today.