2018 RAM 3500

If you've been searching for a capable, hard-working diesel pickup that can handle everything Central Washington throws at it, this 2018 RAM 3500 SLT Mega Cab 4WD for sale at Prestige Motors Yakima in Yakima, WA is worth a serious look. Finished in a sharp True Blue exterior, this truck checks all the right boxes — Cummins diesel power, a massive four-door cabin, and four-wheel drive capability — all at a price point that delivers serious value in today's used truck market.

About This 2018 RAM 3500 SLT Mega Cab

At 95,200 miles, this RAM 3500 is right in the heart of its working life. Cummins diesel engines are legendary for longevity — it's not uncommon to see these trucks run well past 300,000 miles with proper maintenance — so 95K is barely broken in for a well-built heavy-duty diesel like this one. The Mega Cab configuration gives you the largest rear cabin in the 3500 lineup, offering more rear legroom than nearly any other truck on the market. Stock #19980 is priced at $45,999, making it a competitive option for buyers who need genuine heavy-duty capability without stepping into a brand-new truck payment.

2018 RAM 3500 Performance and Engine

Cummins 6.7L I6 Turbodiesel

The heart of this truck is the legendary Cummins 6.7L inline-six turbodiesel, one of the most respected diesel engines in the pickup truck segment. In 2018, this engine produced up to 370 horsepower and 850 lb-ft of torque when paired with the available Aisin transmission, and even in its standard configuration it delivers enormous pulling power for towing trailers, hauling heavy loads, or navigating rough terrain in the Yakima Valley and surrounding mountain areas.

The 6-speed automatic transmission is tuned to manage the diesel's torque output smoothly, whether you're merging on I-82, climbing toward White Pass, or hauling equipment through Eastern Washington's agricultural landscape. Four-wheel drive adds serious confidence when road conditions deteriorate — something any Yakima County driver can appreciate during winter months in the Cascades.

Towing and Payload

The 2018 RAM 3500 with the Cummins diesel is rated to tow over 30,000 lbs when properly equipped in a fifth-wheel or gooseneck configuration. Even in conventional tow setups, you're looking at class-leading numbers. If you're hauling horse trailers, equipment trailers, RVs, or heavy farm loads throughout Yakima County and beyond, this truck was built for exactly that purpose.

RAM 3500 SLT Features and Interior

Mega Cab — More Room Than You'd Expect

The Mega Cab body style is what truly sets this truck apart from standard crew cab configurations. The rear doors are longer, the rear seat reclines, and there's genuine legroom for full-sized adults in the back seat. Whether you're transporting a crew to a job site or loading up the family for a weekend trip east toward the Tri-Cities or west over the pass, the interior comfort matches the truck's capability.

The SLT trim sits above the base Tradesman and delivers meaningful real-world upgrades. Expect features like power-adjustable front seats, a Uconnect infotainment system, Bluetooth connectivity, trailer brake control, and available integrated trailer camera prep — all the tools a working truck driver actually uses. The heavy-duty interior materials in this trim are built to withstand years of hard use without falling apart.

RAM 3500 Reliability and Ownership

The RAM 3500 with the Cummins 6.7L diesel has one of the strongest reputations in the heavy-duty truck segment for long-term durability. Cummins engines have powered RAM trucks for decades and continue to be the preferred choice for commercial operators, farmers, ranchers, and serious towers who depend on their truck daily.

Owners consistently report high satisfaction with the Cummins diesel's fuel economy relative to its class — typically in the 15–18 MPG range on the highway — and praise the truck's ability to handle grueling workloads without mechanical drama. The 2018 model year benefits from a well-sorted, mature generation of the truck with most early issues resolved. As with any diesel truck at this mileage, buyers should review service records for oil change history, fuel filter maintenance, and DEF system upkeep — all routine items for a well-maintained Cummins diesel.

Why Buy From Prestige Motors Yakima in Yakima, WA

Prestige Motors Yakima has earned its reputation serving used vehicle buyers throughout Yakima, Washington. Located in the heart of Yakima County, the dealership understands what local drivers need — trucks that can actually work, not just look good in a parking lot. When you're buying a heavy-duty diesel at this price point, you want to work with a dealer who stands behind their inventory and makes the buying process straightforward.

The team at Prestige Motors Yakima is experienced with truck buyers and knows the questions you're going to ask. They're ready to walk you through the vehicle history, answer questions about the condition, and help you get behind the wheel for a proper test drive. Call them directly at 509-457-5000 to check availability or schedule a time to come out.

Financing a Used RAM 3500 Near Yakima

Financing a used heavy-duty truck in the $40,000–$50,000 range is common, and Prestige Motors Yakima works with a range of lenders to find competitive rates for buyers across the credit spectrum. Whether you have excellent credit, are rebuilding, or are a first-time buyer of a truck in this class, the finance team can walk you through your options.

Commercial buyers and self-employed contractors in Yakima County may also benefit from exploring business auto financing options, which can offer tax advantages when a vehicle like this is used for work purposes. Ask the team at Prestige Motors Yakima about what documentation you'll need and how quickly you can get an approval.

Frequently Asked Questions

Is the 2018 RAM 3500 SLT a good buy?

Yes — the 2018 RAM 3500 SLT with the Cummins diesel is widely considered one of the best heavy-duty diesel trucks available in the used market. It offers best-in-class towing capacity, a proven engine with extraordinary longevity, and a well-equipped cabin at the SLT trim level. At 95,200 miles, a well-maintained Cummins diesel truck like this still has the majority of its useful life ahead of it.

How many miles is too many on a RAM 3500 Cummins diesel?

The Cummins 6.7L diesel is known to routinely exceed 300,000 miles with proper maintenance. Many commercial operators keep these engines running past 500,000 miles. At 95,200 miles, this truck is not considered high mileage for a diesel of this type. What matters most is maintenance history — specifically oil change intervals, fuel filter replacements, and coolant service.

What does the RAM 3500 SLT trim include?

The SLT trim on the 2018 RAM 3500 includes a significant step up from the base Tradesman, with features such as the Uconnect touchscreen infotainment system, Bluetooth audio, power-adjustable seating, heavy-duty cloth or available vinyl upholstery, trailer brake controller, and upgraded exterior trim. It's designed to be a capable work truck with genuine comfort features.

What is the towing capacity of a 2018 RAM 3500 with the Cummins diesel?

The 2018 RAM 3500 equipped with the Cummins 6.7L turbodiesel is rated to tow up to approximately 31,210 lbs in a fifth-wheel or gooseneck configuration, making it one of the top-rated trucks in its class for that model year. Conventional towing ratings are also class-competitive, making this truck appropriate for everything from large RVs to horse trailers to heavy equipment.

Is 4WD worth it on a RAM 3500 in Washington State?

Absolutely. For drivers in and around Yakima County, four-wheel drive is a practical necessity for anyone who ventures toward the Cascades, accesses rural agricultural land, or encounters winter road conditions. The 4WD system on the 2018 RAM 3500 is robust and designed for real-world heavy use, not just light off-road occasional duty.

Serving Yakima and Surrounding Areas

Prestige Motors Yakima is proud to serve used truck buyers throughout Yakima County and the broader Central Washington region. Buyers regularly make the drive from Selah, Union Gap, Naches, Wapato, Sunnyside, Grandview, and the Ellensburg area to shop the inventory at Prestige Motors Yakima. Whether you're coming from the lower valley, the foothills, or from across the ridge from Kittitas County, this truck is worth the trip.

The Yakima Valley's agricultural economy, outdoor recreation culture, and demanding seasonal weather make heavy-duty diesel trucks like this 2018 RAM 3500 one of the most practical and popular vehicle choices in the area. If you've been comparing trucks throughout Central Washington, come see this one in person.

Contact Prestige Motors Yakima Today

Ready to take this 2018 RAM 3500 SLT Mega Cab 4WD for a test drive? Don't wait — well-priced Cummins diesel trucks at this mileage move quickly in the Yakima market. Reach out to the team at Prestige Motors Yakima in Yakima, WA today by calling 509-457-5000. Ask for Stock #19980 and let them know you're ready to come in. Whether you're buying for work, towing, or both, this is a truck built to deliver for years to come.