2025 Thor Motor Coach Aria 3702 Review

For many full-time RVers there is no other way to travel than in a big diesel-pusher. These Class As are large, diesel-powered, and bus-sized. Altogether, they offer an RV experience built on living large. Thor Motor Coach is a long-time player in the diesel-pusher field, so I was pretty excited to see how their experience translated to the Aria 3702.

 

At a Glance: Aria 3702

I gave the 2025 Thor Motor Coach Aria 3702 a score of 7.3 out of 10. There are some really strong features here — including the plush-feeling interior, incredible storage, and abundant attention to detail. Quite frankly, nothing scores below average in this diesel-pusher, and there are some wow factors that could excite a lot of potential buyers. 

The main thing that impacts the value score here is the overall price, which is over $400,000. Certainly, the Aria 3702 has earned the title of a luxury, Class A diesel-pusher, and for its price I’d say that delivers the standard overall value you would expect.

[review_summary class=”custom-class” title=”2025 Thor Motor Coach Aria 3702″ description=”This score is awarded by an expert reviewer conducting an independent assessment of the RV.”]

 

Check the Specs

• Sleeping capacity: 6
• UVW: 35,320 pounds 
• CCC: 6,485 pounds
• Exterior length: 37 feet 8 inches
• Exterior height 12 feet 6 inches
• Exterior width: 8 feet 5 inches
• Fresh/Gray/Black: 91/51/51 gallons
• Propane: None
• Awning: 20 feet
• MSRP: $434,850

 

Features We Love

• Powerful Freightliner chassis
• Automatic generator start and Onan 8,000-watt diesel generator
• Incredible cockpit
• Whirlpool washer and dryer
• Cargo tray in storage bay
• Hidden storage inside

 

 

Benefits

• Pet-friendly power. The automatic generator start is a handy feature. You can configure this so that it comes on when the batteries drop to a certain state of charge, but there’s another function where the generator can come on based on interior temperature. So, if you leave your pets inside, and the temperature climbs above a certain point the generator can fire up and operate the A/C, thereby keeping Fido feeling fine. 
• Driving experience. There’s nothing like driving something like this. With things like big captain’s chairs, an air suspension, and 800 foot-pounds of torque these do feel like you own the whole darned road. Add to that the air horn, and you have a unique driving experience. 
• Surplus storage. There is a lot of storage in these Class A diesel-pushers, and Thor Motor Coach includes a slide-out tray in one of the bays to make it easier to get to items that would otherwise be right in the middle and difficult to reach. Plus, there are a number of hidden storage compartments where you can hide your grandmother’s secret cheesecake recipe, or whatever. More details under Storage. 

 

Challenges

• Intimidating size. A lot of people are rightly nervous about driving anything this big, especially when you think that many owners also tow a vehicle behind the rig. Truthfully, it doesn’t take long to get used to this after all. 
• Schwintek slide-outs. I was rather surprised to see Schwintek slide mechanisms being used. I had previously thought these were mostly for lightweight slides as most rigs with slides this large either use hydraulic or power ram-style actuators. 
• Drawer quality. For something at this price point, I was also surprised to see stapled drawers. I’ve seen some other brands with tongue-and-groove drawer builds, which is a higher quality of cabinet making. 

 

Best For

• If you dream of full-time RV living, this is potentially what you dream about. These large, luxurious rigs are iconic travelers. 
• If you’re bringing the grandchildren along this could be a good choice with a power-operated drop-down bed over the cockpit.

 

Key Areas We Evaluate for RV Buyers

Sleeping Space

True to the premium nature of the Aria 3702, there is a full king-size bed. That bed has a power-lift mechanism to raise the head of the bed up to almost vertical. (So, you could sit there and read RV reviews for hours in comfort.) There’s also a TV in the master as well as a fireplace. So, if your spouse says something and you want to retreat to a place of solace, this is it. 

Meanwhile that spouse can be relegated to the bed over the cockpit, which is remarkably well hidden. But, at the touch of a button, it lowers down. Humor aside, it’s also not a bad place to sleep. It has  a slatted base that adds to the cushioned feel. There is also a telescoping ladder to get up here, but keep in mind that it’s stored in the bedroom. (So, your better half will be able to decide if you should have it.) 

Lastly, the example we saw had a dinette where the table pushes down. You could make this a bed, but that space might be best left to younger travelers. 

Of course, nobody would judge you if you included the power-operated recliners in the sleeping category, as they power down almost completely flat — and have heat and massage functionality. I could relax here happily. (But, as you may be able to tell, I’m also quite adept at saying dumb things, which increases my chances of sleeping in timeout areas.) However you get here though, it’s not a bad place to be. 

 

 

Bathroom

The mid-bath in the Aria 3702 is quite nice, but frankly, it isn’t as very lavish as some of the larger motorhomes with baths across the back of the rig. Still, there is plenty of space in here to accomplish what you need to. It’s even large enough to enable you to change clothes. 

Also, I like that Thor Motor Coach includes an Oxygenics shower head. This is a shower head that many of us install immediately. However, in the case of the Aria 3702, Thor Motor Coach went ahead and did it for us — a quality move. 

 

 

Living Area

As you would expect in a rig of this price point, the living area of the Aria 3702 is nicely done. The air conditioning is ducted so that it’s no obtrusive at all. It’s also what is referred to as a whisper-ducted system. Happily, this name really fits. 

Opposite the theater seats and that dinette is a big TV on a televator that comes rising out of a cabinet. There’s a surprise here, too, with a pull-out desk. You could wire in a computer and use that big TV to get some work done or, potentially, use it for gaming as well. (I don’t judge.)

Something you can only find on a rig of the Aria 3702’s caliber is heated tile floors. Towable RVs have much more flex in their frames, so tile doesn’t work well there. But these big, hefty frames allow you to also use actual tile floors. I was also impressed to see that Thor Motor Coach included a few spare tiles in the event that you drop a pickle jar and break one. 

Something I have never seen before in a motorhome is the provision for securing child safety seats. This is something that surprises some owners when they realize they can’t bring the very youthful campers because there’s no provision to accommodate their seats. Fortunately, that’s not true here — and kudos to Thor Motor Coach for including them. 

 

 

Kitchen

This kitchen in the Aria 3702 has no propane whatsoever, so cooking is done via an induction cook top. There’s also a very large microwave — one as large as in a nicer home kitchen. Another thing to like is the large residential refrigerator with ice and water in the door. There is a whole-RV water filter as well. What this means is that the water in the fridge (and everywhere else) goes through that filter whether it comes from the holding tanks or the city. 

Another really neat feature is a slide-out set of drawers. The entire drawer cabinet slides out from under the main cabinet. This adds to the already-substantial counter space. The drawers here are also pretty deep.

 

 

Four-Season Capabilities

Like most RVs these larger models do best when they’re kept above freezing. While there is insulation around water tanks, these aren’t well-suited to camping when temps get much below freezing. 

 

Storage Space

One of the reasons you buy a Class A diesel-pusher is for storage. Honestly, there is so much storage in the basement of these you could almost rent it out to friends. What’s more, this has a sliding tray in one of the storage bays to make getting to things even easier. 

Further, there are a ton of overhead cabinets, closets and drawers inside the RV. If you’ve read about people downsizing when they hit the road, they likely don’t have this RV. You may have to buy more stuff just to fill all the compartments. Well, okay, maybe that’s an exaggeration, but there is a tremendous amount of storage in here. 

 

 

Closing Notes on the Aria 3702

Driving Experience

As mentioned in the features, there is a lot to like about the Freightliner chassis. While it might seem that these are very large and intimidating, a bit of time behind the wheel will tell a different story. 

The suspension in this RV is an air suspension, able to smooth out bumps and jolts and provide a rather isolated ride like a 1956 Coupe de’ Ville. There are also cameras around the RV to give you a good view of who or what is around you. And you’re also sitting in very comfortable captain’s chairs. As a bonus, the navigator’s seat features a power reclining mechanism. (So, it might be tough to keep them awake.)

Something unique here is a power-operated mechanism that lifts the floor of the step well at the entry door to become even with the floor of this RV. This seems more reliable than the sliding floor section in some of these Class A motorhomes, and the material Thor Motor Coach chose is the same solid surface material as used in the counter tops. Nice. 

 

 

Pros and Cons

While a lot of RVs talk about luxurious this and that, there’s really no comparison to a Class A for a premium experience. Driving these, with the enormous windshields and high-up driving position, is a great way to see the USA. You are also very elevated above the road, so the whole driving experience is rather plush. 

But the downside to this is that you are driving a big bus with all the cost of maintenance, tires, and all of that inherent with this platform. Also, only 100 watts of solar literally is nothing but a disappointment — it won’t compensate for any use. Either go in with a few hundred watts or don’t bother. 

I was also really surprised to see Schwintek slide mechanisms, as written. 

However, altogether you get a very pleasant place to be with the ability to accommodate guests in the over-cockpit power lift bed, which is really well integrated into the cockpit. (It might surprise some that it’s even there.) Overall, the Aria 3702 is a nice place to call home, wherever you park it. 

 

A Note on the RV Trader Review Process

RV Trader asked RV shoppers what was most important to them in their RV buying process. Potential buyers — like you — helped us to identify a list of six key areas that camping and travel enthusiasts always look at when they’re searching for the perfect RV: sleeping space, bathroom, living area, four-season capabilities, and storage space.

The RV Trader team then got to work providing you with honest and unbiased evaluations. If you’re wondering, that’s where I came in. As an RV expert and enthusiast, I provide an honest look at RVs from an RV industry insider perspective.