Picking an RV is harder than it looks—too small and you're cramped; too large and you're paying for space you won't use. The key is matching the RV class and length to your group size, trip duration, and comfort needs. Let's walk through the concrete factors that determine what will actually work for your trip.
How Many People Will Sleep in the RV?
This is your starting point. Count everyone traveling, including kids, and then add one for the inevitable guest. Most RVs sleep between 2 and 10 people, but sleeping capacity doesn't always mean comfort.
Class A motorhomes (30–40 feet) typically sleep 4–8 people with dedicated bedrooms and full kitchens. Expect $150–$300+ per night depending on season and amenities.
Class B vans (20–24 feet) sleep 2–4 people in a cozy setup; these run $80–$180 per night and are popular with couples and small families.
Class C motorhomes (25–35 feet) split the difference, sleeping 4–6 people at $100–$220 per night.
Travel trailers and fifth wheels (16–40 feet) vary widely in layout; a 24-foot trailer might sleep 4 but feel more spacious than a Class C of the same length because they don't have a bulky engine compartment.
Don't just count beds—think about who sleeps where. If you have teenagers and young kids, bunk-style sleeping areas work well. If you're with a partner or another couple, you'll want separate sleeping zones.
Trip Length Matters More Than You Think
A weekend getaway has different RV needs than a month-long road trip.
Weekend trips (2–3 days) work fine in compact Class B vans or small travel trailers (20–24 feet). You'll save on rental costs ($150–$250 total) and these are easier to maneuver into campgrounds.
Week-long vacations justify a mid-size Class C or travel trailer (26–32 feet). You'll want a real kitchen, full bathroom, and storage space. Budget $700–$1,400 for the rental alone.
Extended trips (2+ weeks) need a Class A or larger travel trailer with full facilities, good insulation for temperature swings, and robust storage. At this duration, weekly rates typically drop 10–20% compared to daily rates, so a Class A at $200/night becomes closer to $160/night when booked for 14 days.
Fuel Costs and Drivability
Larger doesn't always mean better if fuel and handling wreck your budget and stress level.
A Class A motorhome burns 5–7 miles per gallon and costs $400–$700 in fuel for a cross-country trip. A Class B van gets 15–18 mpg, cutting fuel costs by 60%. If you're driving under 500 miles total, fuel is less critical; if you're traveling 1,500+ miles, those mpg numbers become serious money.
Campground hookups matter too. Larger RVs need full-service sites ($35–$65/night), while smaller Class B vans can rough it at basic sites ($15–$30/night) since they have less battery drain.
Layout and Amenities
Open your eyes to actual floor plans. Many RVs tout "sleeps 6" but have a dinette bed that's 4 feet across—not realistic for adults.
Must-haves:
- Full kitchen with stove and oven (not just a portable cooktop)
- Enclosed bathroom with shower (vs. a tiny wet bath)
- Separate bedroom or privacy curtain
- Adequate storage (Class A and trailers are much better here than Class B vans)
- Working furnace and air conditioning (critical for shoulder seasons)
If you cook real meals, a Class C or larger is non-negotiable. If you'll eat out, a Class B is fine.
Finding the Right Fit
Platforms like Mercoly let you compare RV rentals from multiple providers side-by-side—check availability, read detailed reviews about specific models, and see real photos of the exact unit you're renting, not just a stock image.
Start by filtering by your required sleeping capacity and trip dates, then narrow by budget. Always check what's included: mileage caps (some charge $0.25 per extra mile), generator time, campground reservation fees, and damage waivers.
Frequently Asked Questions
Q: Should I book a larger RV just in case? No. Oversized RVs cost 40–60% more and are harder to park and maneuver. Book for your actual group size; you can always upgrade if availability allows, but downsizing mid-trip is painful.
Q: What's the difference between a Class B and Class C—are they really that different? Yes. Class C has a cab-over bed, bigger kitchen, separate bedroom, and more storage. Class B is van-based with a tiny kitchen and open sleeping/living area. Choose Class C if comfort is the priority, Class B if budget and easy driving matter most.
Q: Do I need a special license to rent an RV? No. Standard licenses work for Class A, B, and C motorhomes and travel trailers under 10,000 lbs. Some states and rental companies have minimum age requirements (usually 25) and may charge extra for renters under 30.
Use Mercoly today to compare trusted RV rental providers in your area and lock in the perfect size for your adventure.