2025 Ram 2500 Pre-Purchase Inspection Checklist
Known Issues — 2025 Ram 2500
CRITICAL
6.7L Cummins DEF system sensor failures
MODERATE
6.4L HEMI oil consumption at high mileage
MINOR
Early production software calibration issues
MINOR
Uconnect 12.0 infotainment lag
MINOR
Front axle U-joint wear long term
MINOR
TPMS calibration after rotation
What to Inspect
- On Cummins — check DEF system for fault codes
- On 6.4L HEMI — check oil level
- Inspect front axle U-joints
- Test Uconnect 12.0 infotainment
- Test 4WD engagement in all modes
- Confirm full factory warranty is active
Expected Maintenance Costs
| Service | Interval | Cost |
|---|---|---|
| Oil change (diesel synthetic) | every 15,000 miles | $150-$220 |
| Oil change (HEMI gasoline) | every 8,000 miles | $80-$120 |
| Fuel filter (Cummins) | every 15,000 miles | $80-$150 |
| DEF fluid refill | every 10,000 miles | $30-$60 |
| Rear differential fluid | every 45,000 miles | $130-$200 |
| Transfer case fluid | every 60,000 miles | $100-$160 |
| Brake service | every 40,000 miles | $550-$850 |
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