2004 Holiday Rambler Neptune Problems
- Complaints
- 5filed with NHTSA
- Median mileage
- 44,312miles, 4 complaints with mileage
- Recalls
- 2campaigns on record
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
Sources: NHTSA records for the 2004 Holiday Rambler Neptune (complaints, recalls, investigations). Report an error
NHTSA recorded 5 consumer complaints for the 2004 Holiday Rambler Neptune. The part named most often is suspension, with 4 complaints (80% of the total), followed by engine cooling (1) and transmission and drivetrain (1). 4 of the complaints include a mileage, and 50% of those were filed for vehicles with under 50,000 miles; the median is 44,312 miles. NHTSA lists 2 recall campaigns and 0 technical service bulletins for this model year. Suspension complaints overlap with 2 recall campaigns covering the leaf spring assembly filed under the same part.
This model year has fewer than 25 complaints on record, so the numbers below can change a lot with a few new reports.
Which parts are reported most
Complaints can name more than one part, so the counts add up to more than the total. Select a part to see its complaints, recalls and bulletins.
- Suspension4 80%
- Engine cooling1 20%
Example complaints
Suspension: “Embarked on a road trip at approximately 9:30 am after traveling about 4 miles the entire motorhome went into a violent and severe swaying motion. I slowed the veh and pulled to shoulder of the road, inspected all tires, nothing apparent or obvious. Used a creeper to inspect under veh suspension unable to detect a problem. Resorted to internet with description of incident and discovered a potential cause. Armed with information garnered from several web sites. The problem was quickly detected. …”
NHTSA complaint #10514747, filed 2013-06, 56,100 milesEngine cooling: “With only 14,000 miles on vehicle the aluminum radiator began leaking where the core is attached to the tank. Manufacture has since replaced aluminum with steel radiators but would not agree to pay for any of the replacement since the warranty time has expired. I have talked to other people with the same type of motor home that are having leaks also. I feel this is a trend and maybe should be investigated for installing faulty radiators in these units. Radiators should last longer than 14,000 miles.”
NHTSA complaint #10208091, filed 2007-11, 14,654 milesTransmission and drivetrain: “The contact owns a 2004 Holiday Rambler Neptune built on a Roadmaster chassis. The contact stated while driving approximately 30 MPH, the RV was swaying in the lane and the steering wheel shifted position and was horizontal. The contact stated no warning light was illuminated. The contact stopped the RV and observed that the rear bumper was almost touching the road surface and the rear passenger side tire was almost touching the wheel well. …”
NHTSA complaint #11617838, filed 2024-10, 86,000 milesMileage when problems were reported
50% of the 4 complaints with a mileage were filed for vehicles with under 50,000 miles; the middle half falls between 32,524 and 56,100 miles.
Complaints by year filed
Fewer than 15 complaints, too few for a reliable trend.
Recalls and investigations
- 05V053000Feb 14, 2005Suspension › Rear › Springs › Leaf spring assemblyCovers: Holiday Rambler Neptune 2002–2005, Monaco Coach Cayman 2002–2005, Safari Coach Cheetah 2003–2005 +4 more
On certain class a motor homes, the spacer plate under the trailing arms had a transverse weld which creates a heat riser and cause the trailing arms to crack.
- 04V038000Jan 28, 2004Suspension › FrontCovers: Holiday Rambler Neptune 2002–2004, Monaco Coach Knight 2002–2004, Holiday Rambler Ambassador 2002–2004 +5 more
On certain motorhomes, the I-beam leaf imitator in the front axle suspension could crack and break due to an inadequate welding process.
Recall details for the 2004 Holiday Rambler Neptune → · Check a VIN at nhtsa.gov/recalls
Technical service bulletins
No technical service bulletins are on record for the 2004 Holiday Rambler Neptune.
Other model years of the Holiday Rambler Neptune
| Year | Complaints | Median mi | Recalls | Crash ★ | MPG | Score (50 = typical) | Trend |
|---|---|---|---|---|---|---|---|
| 2007 | 6 | 20,500 | 2 | — | — | — | Not enough data |
| 2004 | 5 | 44,312 | 2 | — | — | — | Not enough data |
All Holiday Rambler Neptune model years
Frequently asked questions
How many NHTSA complaints does the 2004 Holiday Rambler Neptune have?
NHTSA recorded 5 consumer complaints for the 2004 Holiday Rambler Neptune as of Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
What part of the 2004 Holiday Rambler Neptune is reported most often?
Suspension is named most often, in 4 complaints (80% of the total), followed by engine cooling with 1.
Has the 2004 Holiday Rambler Neptune been recalled?
NHTSA lists 2 recall campaigns for this model year. To check a specific vehicle, enter its VIN at nhtsa.gov/recalls.
At what mileage are problems with the 2004 Holiday Rambler Neptune reported?
Among the 4 complaints that include a mileage, the median is 44,312 miles and the middle half falls between 32,524 and 56,100 miles; 50% were filed for vehicles with under 50,000 miles.
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
Complaint counts come from NHTSA’s public complaint database; we count each complaint once. The source records for this vehicle are on nhtsa.gov. Scores and trends are our own summaries of that data, described in the methodology. This page is not legal, safety or repair advice: for a specific vehicle, check its VIN at nhtsa.gov/recalls and ask a qualified mechanic. See an error? Tell us.