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Reasons Why Diesel Motor Homes Are Best to Own

Updated on October 09, 2016

There are substantial differences between Diesel Pusher Motor Homes and those that run on gasoline. There is also a great deal of controversy between owners as to which type of coach is better to own.

Since my husband and I have owned several models of both types of motor homes during our more than 50 years as RVers, I feel qualified to advise you about this issue.

  • The truth is that how good any motor home is depends on its quality, construction and care. You can buy any unit that is top of the line, and it will serve you well.
  • However, if it has been misused or is a "lemon" coming out of the factory, they type of fuel it uses, its price or it's basic amenities won't matter.

So, when discussing the benefits (or lack thereof) of gas and diesel coaches, you need to make sure you are not comparing apples to oranges.

For purposes of this article, this is how we will proceed.

We'll stick to the facts, rather than buying into the hype, so that you will have a clear picture of why I feel diesel motor homes are the best to own.

Good reasons for owning Diesel Pusher Motor Homes.
Good reasons for owning Diesel Pusher Motor Homes. | Source


It is important to note that all manufacturers produce various "levels" of motor homes. Thus some are lower quality than others. To even the playing field, let's discuss mid level coaches.

The average new Diesel Pusher costs about one third more than a similar level of gas motor home. For this reason, many buyers purchase gasoline run motor homes.

However, there are a number of amenities they cannot have if they do this, and some of them make a big difference financially in the long run.

For example, a well maintained pusher will hold its value much better than a similar gas model, and it will also last longer.

What good does it do to save on the price of a new coach if you have to replace it sooner and lose more money on your trade?

Furthermore, you can reap all of the benefits of a diesel and pay much less if you purchase one that was previously owned and well-maintained. When you do this, you'll be buying a vehicle that is sturdier and more durable that can last as long as you want to own it!

In 2002 we purchased a 1996 Safari Serengetti (new price, $164,600) for $71,000 (out the door price including $12,500 for our trade in motor home) and drove it all over the country for four years until illness forced us to sell it fast at a reduced price of $45,000. We just saw the same coach for sale recently (ten years later) for $30,000. It's now 20 years old!

Our 1999 Holiday Rambler gas engine coach, which we bought in 2012 for $19,500 out the door with no trade in, sold new for $82 500.. Today the NADA value is around $15,000. It's only 16 years old.

Had we not had that emergency, we'd still be driving the Safari and could have saved a bundle!

When there is no doghouse, the living area in a diesel is more home like.  This is the interior of a used Country Coach that we once owned.
When there is no doghouse, the living area in a diesel is more home like. This is the interior of a used Country Coach that we once owned. | Source


Due to the way they are constructed they are constructed, Diesel Motor Homes have certain amenities that gas engine coaches do not

These are not after market items that you can add later because there is no way to integrate them into a gasoline run unit.

Two good examples of this are Pak Brakes and Inverters.

Pak Brakes

Pak Brakes are important to have in a travel unit if you plan to visit mountainous areas, such as those found in the Northwestern United States.

They are a safety feature that uses the weight of the coach’s engine to slow the coach rather than the brakes when you are driving down steep hills.

They not only save wear and tear on your braking system, they can and do save lives.


Inverters can only be used in Diesel Motor Homes and are a wonderful amenity to have on board because they

  • can save wear and tear on your generator,
  • save the cost of fuel to run a generator and
  • add a great deal of comfort during travel and living.

Inverters get their energy from a running engine, a generator or a solar panel and can produce enough electricity to run a microwave, small heater or heating pad.

Thus, if you are driving along, you can plug a heating pad into an inverter outlet in your coach and enjoy the comfort of vibration and/or heat either to keep warm or to soothe an aching back without having to turn the generator on.

Conversely, you can run a fan to help circulate your dash air and stay cooler if your coach gets too hot.


As I noted earlier, Diesel coaches are sturdier than gasoline models. They have to be in order to hold their huge engines securely.

As a result, the support system is stronger and the walls are thicker which makes them safer and more durable.

A well maintained Diesel Motor Home will last as long as you like.
A well maintained Diesel Motor Home will last as long as you like. | Source

Other Diesel Motor Home Benefits

Aside from the items I have mentioned above, there are a number of other benefits for people who decide to purchase pushers.

  1. Because their engines are located in the rear of the motor home, travelers are cooler and engine noise is minimized. This makes conversation much easier.
  2. Hitching rates are twice that of gas coaches (5000 pounds vs 10,000).
  3. Diesel pumps fill faster, so less time is spent in truck stops.
  4. Also, there’s no doghouse between the front captain’s chairs, which makes getting into and out of them much easier. This also creates more space for swiveling the seating which makes the living area more home like.
  5. Driving them is much less stressful because they are more powerful and their heavier weight makes them more stable on the highway.
  6. Because they are constructed with heavier materials, amenities such as washer/dryer combos and granite counters are less likely to overload their chassis.
  7. There is more storage space under the coach.
  8. Their engines and generators last much longer than those that run on gasoline. Some engines have been known to easily run beyond 500,000 miles, while gas engines have a top limit about 100,000.
  9. They get better mileage, too, and this helps to make up for the higher cost of fuel. The average Diesel gets about 10, but I have had coaches that get up to 14. A lot depends on driving speed and road conditions. Gas engines get between 6 and 8.


My husband and I have owned both types of motor homes during our 50 years as RV enthusiasts.

Although there are things we like about gas engines, we have learned that there is nothing like the security and comfort of owning a diesel pusher.

They ride better, drive better and provide more safety and security.

These are important issues when you are on the road, and should not be taken lightly.

If you can afford to purchase a good used Diesel Motor Home, you’d be wise to do so. In the long run, it will cost you less, last longer and be more enjoyable to own.

Would you rather own a Diesel or a Gas Motor Home?

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  • TIMETRAVELER2 profile image

    TIMETRAVELER2 2 months ago

    wilderness: Opinions will always vary, but I disagree that the Holiday Rambler is a "run of the mill" coach. In fact, it actually is more well built than many coaches, either diesel or gas, that you see on the road today. Much depends, too, on how much of the repair work you can do yourself and how good you are at finding deals on parts. Also, you seem to have forgotten that a diesel engine is generally good for from 300,000 to 500,000 miles, whereas a gas engine coach will start having problems over 100,000 even if well maintained. It may cost less to replace a gas engine, but you'll have to do it more often!

    Thanks for your input, though. Always good to hear from you.

  • wilderness profile image

    Dan Harmon 2 months ago from Boise, Idaho

    TT2, I have to side with Don somewhat here - you are doing the apples to oranges thing yourself. When you say that the Safari lost $120,000 in 20 years while the Rambler lost $67,000 in 16 years so the Safari keeps it's value better, well, I just can't agree with that. You're looking at the difference between a top end coach and a run of the mill one.

    Just like with inverters: I had a gas coach with a 2500 W inverter...and 5 12 volt glass mat batteries intended for remote telephone switching stations. The capacity of those batteries was likely more than anything you've had in any of your diesel coaches - it's all in what you choose to put into a coach.

    I've had two diesel coaches now, and both of them about broke the bank in engine repairs. I can put in a water pump, for instance, into my gas engine for $50; to have one put into the Cummins was $1,000 and the front oil seal was another $1500. The diesel fuel pump was over $1,000 compared to $50 for a gas one. These are the little things, things that go bad in either gas or diesel when you get up around 100,000 or more miles, but in diesel engines they are many times the cost to repair, minor or not.

    Having said all that, were I in the market for a newer high end, 40' coach, I would definitely go diesel, looking for many of those advantages you list. I'm not, though - I don't want anything over about 32' and while I can find a diesel in that length the extra advantages you list aren't there any more. They only exist in those huge, massively expensive, coaches like the Safari and not the light weight, shorter coaches I prefer.

  • TIMETRAVELER2 profile image

    TIMETRAVELER2 5 months ago

    Don: I know all of that, but my point is that the batteries in a Diesel coach are greater in number and bigger and are therefore more able to support inverter use. You know as well as I do that inverters come in different strengths. Yes, a small inverter (1000) can work, but a 2000 level is really the best to have. Using one that strength in a gas powered coach is not advisable for that reason. The trick is for the owner to know exactly how to use the inverter he may have, and many people do not. Thus, they can create problems for themselves, especially when they are dry camping. Not everybody "hooks up" when camping, but many drive to a site and then stay there for days. The lower the voltage an inverter has, the more likely it will be to drain less powerful batteries sooner. End of story. I think we've beaten this one to death. Thanks for your input.

  • Don Bobbitt profile image

    Don Bobbitt 5 months ago from Ruskin Florida

    TT2 - I apologize again, but;

    All motorhomes have 12VDC Chassis batteries, and Coach batteries. The chassis battery/s is for the engine and automobile-like functions like headlights, front radio, etc.

    Coach batteries, on the other hand, are for the coach equipment such as the 12-VDC lights, 12-VDC accessories, the older double-mode fridge, etcetera.

    The Coach batteries are usually 2-12-VDC batteries or 4-6-VDC batteries in a motorhome regardless of whether its a Diesel or Gas RV.

    These Coach batteries are kept charged when driving down the road by the motorhome's engine battery charging system (alternator).

    When driving down the road, these Coach batteries power an Inverter which inverts (reshapes??) the 12-VDC from the batteries into 120-VAC, usually for such things as the microwave, and the motorhome TV's as well as often, a couple of 120-VAC receptacles near the dash for computers and such.

    When in a campsite, with 120-VAC hookup, your motorhome's power control panel senses this outside power is available and routes this outside power to your RV Coach equipment that uses 120-VAC.

    And it powers the charging circuitry of the "Inverter" to keep the 12-VDC Coach system charged.

    BTW, I am an Electrical Engineer, and I can assure you this is the way every motorhome I have ever seen or heard of operates.

    Have a good day,


  • TIMETRAVELER2 profile image

    TIMETRAVELER2 5 months ago

    Don: I don't doubt that, but here's the problem. Inverters work off of batteries. Gas coaches have smaller batteries than Diesels, therefore, the inverters they do have can deplete those batteries if owner's are not careful. A diesel pusher only needs one inverter to run everything, not a separate one for each appliance, which is the way it should be. Sounds as though manufacturers have kind of gerry-rigged inverters for gas coaches that can't really do the whole job just so they can say that their units do have them. Truthfully, I have never seen a gas engine coach with an inverter, nor would I want to have one. Taking the chance of draining your batteries is not worth it to me. each his own!

  • Don Bobbitt profile image

    Don Bobbitt 5 months ago from Ruskin Florida

    TT2 - Not trying to stir you up, but I have a Bounder with an inverter for the TV's, and many of the newer ones that use household appliances such as refrigerators will have a battery set and an inverter just for the fridge. You're right, a diesel pusher is typically larger and more comfortably outfitted for those, such as yourselves who travel more. No argument on that. Have a good day! DON

  • TIMETRAVELER2 profile image

    TIMETRAVELER2 5 months ago

    Hi Don: I have owned several gas engine motor homes, some that were high level, and have never seen one with an inverter, Perhaps they are putting them in some of the newer models, but I'd like to know which ones. I would assume that any buyer would choose a coach based on his personal needs without having to be told to do so. However, even with that, if you buy a well maintained older Diesel you can use it as you please and pay no more than you would for a similar gas engine model. Regardless of need, Diesels are easier to drive and more comfortable to travel in, and that was one of the points I wanted to make. Always good to have other viewpoints on these hubs. Thanks for stopping by.

  • Don Bobbitt profile image

    Don Bobbitt 5 months ago from Ruskin Florida

    TT2 - Your article is very good, and makes some excellent points. But, I have owned two diesel pushers and 3 gas motorhomes and I would disagree with you on a few points. First of all, gas motorhomes do have and use Inverters.

    Secondly, your Safari was a top-end high quality motorhome that even today I wish I could have afforded. They were so good that when the recession hit the RV market in '07, '08, they were bought out by Monaco and the newer models were literally Holiday Ramblers with different logos on them

    And, I think you should mention that the buyer needs to purchase what fits his camping plans. As a full-timer, putting on a lot of miles, you are absolutely right, a "pusher" is a preferred RV design. But, for the Part-timer, and occasional camper, who isn't driving a lot in mountains, a quality gas motorhome is quite adequate.

    In fact, when I am asked on my blog what the real difference is, I usually state that the difference is around $30K, buying and selling. Then I tell them that they rest of their decision making should be based on (1) how much and long are they going to sue a motorhome, and (2) how much money they want to spend.

    Great article though and good information for a novice purchaser.


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