AI-generated · grounded in NHTSA data
Reliability & 5-year cost of ownership — 2015 Grand Design Momentum 385th
Overall rating NHTSA-grounded
Average
Estimated 5-year repair + maintenance cost: $7,000–$12,000
The 2015 Grand Design Momentum 385TH exhibits reliability issues mainly with its service brakes, supported by complaints. However, the broad component 'unknown or other' suggests occasional, non-critical issues, leading to an average reliability rating.
Most-common failures
| Part | Typical mileage | Cost range | Frequency |
|---|---|---|---|
| service brakes | 30,000–50,000 miles | $300–$800 | common |
| axle system | 40,000–70,000 miles | $500–$1,000 | occasional |
| roof leaks | 50,000–70,000 miles | $200–$600 | occasional |
Scheduled maintenance to budget
Routine items every owner should plan for.
- Annual brake inspections
- Roof resealing every 2 years
- Tires replacement at 40,000 miles
- Annual battery replacements
- Fluids replacement every 2 years
Warning signs to watch for
Symptoms that signal a major upcoming repair.
- Squealing brakes
- Water spots on ceiling
- Uneven tire wear
- Noisy axle
- Frequent battery draining
Generated by gpt-4o on 8/24/2026. Cost ranges are conservative estimates that account for typical regional variation.