About Diamond Jim Motor Cars: A Better Way to Buy and Sell Cars
At Diamond Jim Motor Cars, we believe buying a vehicle should feel straightforward, fair, and stress-free. Our dealership was built on the idea that customers deserve clear information, honest pricing, and a team that genuinely listens. From your first visit to the moment you drive away, our focus is on creating a smooth experience built around trust—not pressure.
Local Values. Lasting Relationships
Diamond Jim Motor Cars is proud to serve our local community and surrounding areas. We value long-term relationships and believe great service doesn’t end at the sale. Our reputation is built on repeat customers, referrals, and doing the right thing—every time.
Hand-Selected Inventory
Every vehicle on our lot is carefully selected with reliability, value, and condition in mind. We take the time to evaluate each vehicle so you don’t have to second-guess your decision. Whether you’re shopping for a daily driver or something special, you’ll find options chosen with care and attention to detail.
Options That Fit Your Life
We work with a wide network of lenders to help make financing more accessible and straightforward. Whether you have excellent credit or are working through challenges, our finance team is committed to finding solutions that make sense for your situation—without confusion or unnecessary complications.
Our Promise to Customers
From browsing our inventory to final paperwork, we are committed to open communication. You’ll receive clear vehicle details, straightforward explanations, and honest answers—so you can make confident decisions without feeling rushed or misled.
Whether you’re buying, trading, or just exploring your options, we invite you to experience the difference at Diamond Jim Motor Cars. Stop by, browse our inventory online, or reach out to our team—we’re here when you’re ready.
Why Choose Diamond Jim Motor Cars?

More Than a Dealership: Diamond Jim Motor Cars is proud to serve our local community. We believe strong businesses contribute positively to the people they serve, and we work hard to earn trust through consistency, accountability, and care.
Respect Is Not Optional: We believe great service doesn’t stop when the sale is complete. Our team remains available to answer questions, assist with paperwork, and provide guidance long after you leave the lot. That ongoing support is how lasting relationships are built.
Fair Value for Your Vehicle: If you’re trading in a vehicle, we aim to make the process simple and transparent. We evaluate trade-ins fairly and explain how values are determined, so you understand exactly how your vehicle fits into your purchase.
Real Options. Real Support: Our finance team works with a broad network of lenders to provide competitive financing solutions for a wide range of credit profiles. We take the time to explain your options clearly and help structure payments that align with your goals—without hidden surprises.
Visit our used car dealership conveniently located in Milwaukee, WI: Near Waukesha, West Allis, Greenfield, Brookfield, & Oak Creek.
Diamond Jim Motor Cars
Street address:
5265 South 27th Street
Milwaukee, WI 53221
Phone:
| Day | Sales Hours |
|---|---|
| Monday | 9:00 AM - 7:00 PM |
| Tuesday | 9:00 AM - 7:00 PM |
| Wednesday | 9:00 AM - 7:00 PM |
| Thursday | 9:00 AM - 7:00 PM |
| Friday | 9:00 AM - 5:00 PM |
| Saturday | 9:00 AM - 5:00 PM |
| Sunday | Closed |

