2018 Ram Promaster used buying checklist

Test for the problems owners report most

The most reported problems of this model year, with what to look for on the test drive.

• Engine and cooling12 owner complaints, usually around 32,584 miles

  Start the engine cold and listen for knocking or ticking. Check for warning lights, oil leaks and a low oil level, and ask how often oil had to be topped up.

• Electrical system11 owner complaints

  Test every screen, camera, power window, lock and the key fob. With the engine running, make sure no warning lights stay on.

• Transmission and drivetrain7 owner complaints

  On a test drive from a cold start, check that shifts are smooth, with no slipping, delays, shudder or jerking at low speed. Ask for transmission fluid service records.

• Windows, wipers and visibility4 owner complaints

  Test the wipers, washers, defrosters and every window. Look for chips or cracks in the windshield.

Make sure these recalls were done

Recall repairs are free at any dealer of the brand. Ask the seller for proof, or have a dealer check the VIN.

• Engine and engine coolingRecall number 25V720000, Oct 23, 2025
• Power trainRecall number 20V582000, Oct 15, 2020
• Power trainRecall number 20V036000, Jan 23, 2020
• EquipmentRecall number 19V818000, Nov 15, 2019
• EquipmentRecall number 19V428000, Jun 11, 2019
• SeatsRecall number 19V333000, Apr 29, 2019
• SeatsRecall number 19V313000, Apr 18, 2019
• SeatsRecall number 19V332000, Mar 1, 2019
• Electrical systemRecall number 18V524000, Aug 9, 2018
• Air bagsRecall number 17V712000, Nov 14, 2017

Service bulletins worth asking about

Repair instructions the maker sent to dealers for known problems. Ask whether any of these repairs were done.

• SHAFT Axle Half Left Warning: Do not replace both axles due to one being damaged; the second replacement...Oct 27, 2026
• Remanufactured Half Shaft RT Warning: Do not replace both axles due to one being damaged; the second...Oct 27, 2026
• Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp...Jul 22, 2026
• Outside Power Fold Rearview Mirror Noise Or Loose At PivotJun 12, 2026
• Water Pump & Chain Case CoverJan 21, 2026
• Starter - engineJan 13, 2026

Before you pay

• Decode the VIN and make sure it matches the title, the registration and the car itself.
• Get a vehicle history report to check for accidents, salvage or flood titles and odometer problems.
• Ask for service records, especially oil changes and any transmission fluid service.
• Start the car from cold, and drive it at city and highway speeds for at least 20 minutes.
• Have an independent mechanic inspect the car before you sign anything.