2004 Newmar Mountain Aire: common problems

Owners of the 2004 Newmar Mountain Aire filed 7 complaints with NHTSA, most often about service brakes. Details by component below, with sources.

Key figures

Owner complaints: 7

What fails most often

Service brakes: 6 complaints (86% of all).

Symptoms owners describe

How many of the 7 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).

brake failure1 · 14%
smoke, burning smell, fire1 · 14%
steering or power steering problems1 · 14%
warning lights, check engine1 · 14%

Components owners complain about

Component	Owner complaints	involving a crash	Technical service bulletins (TSB)
Service brakes	6	0	0
Other	1	0	0

What owners report

Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.

The contact stated while driving 60 mph the abs light came on and the brakes began to malfunction causing the vehicle to have shorter stopping distance. The contact called the manufacturer regarding the brakes and they informed the contact to take the vehicle to a local dealer.
Service brakes · 2010-09-22 · NHTSA complaint #10356947
The brakes locked up causing the vehicle to smoke which remained stationary so that it could cool down. The failure occurred six months after the vehicle was repaired. The manufacturer was notified and recommended that force be applied to the brakes with a screwdriver.
Service brakes · 2010-03-31 · NHTSA complaint #10322999
The power assist for the braking system is run off the power steering pump and should you lose the serpentine belt or the engine shuts down there is a redundant electric motor to provide power assist tot the brakes. But, should you lose both you have no brakes per si on a 26,000 motor home.
Service brakes · 2008-04-21 · NHTSA complaint #10225288

When owners complained

NHTSA complaints by filing year. The peak shows at what age the problems show up most.

20071
20082
20091
20102
20171

Comparison

By complaint count this model year ranks 12,538 of 36,656 model years in the NHTSA data (top 34% most complained about).

On average one model year of the Mountain Aire has 2 complaints (27 years in the data). This year has 7, above average.

What to check before buying

Service brakes. Pedal feel, ABS operation, leaks, discs and hoses.

Other years of this model

Questions and answers

What are the most common problems with the 2004 Newmar Mountain Aire?

Owner complaints to NHTSA most often mention: service brakes. Total complaints: 7. The most frequent symptoms in complaint texts: brake failure (14%), smoke, burning smell, fire (14%), steering or power steering problems (14%).

How many service bulletins (TSB) were issued for the 2004 Newmar Mountain Aire?

NHTSA lists 0 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.

Should I buy a 2004 Newmar Mountain Aire from a US auction?

Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.

Other 2004 models

Read also

Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-05.