A Class A is a bus with a kitchen. It is the most comfortable way to travel by road and the least flexible vehicle at a campground. Before you book anything, check three numbers: the length limit of the site, the service amperage, and the licence class your state requires for the weight.
Length
| Class A length | Where it fits |
|---|---|
| 26–30 ft | Most state parks, older campgrounds |
| 31–35 ft | Many parks; check each site |
| 36–40 ft | Private parks, newer public sites |
| 41–45 ft | Limited: pull-through sites only |
National park campgrounds are often capped at 30–35 ft, and some historic parks at 27 ft. A 40 ft coach is a fine vehicle and a poor choice for a tour of older parks.
Measure the total length including the ladder and bike rack. Site limits are enforced at the gate.
Slide-outs
| Slides | Space gained | Consideration |
|---|---|---|
| None | Baseline | Best for tight sites |
| 1 (living) | 2–3 ft width | Needs side clearance |
| 2 | 3–5 ft | Check both sides |
| 3–4 | Full-time living | Site must be wide |
Slides need clearance on the outside of the coach. A site that fits the vehicle may not fit the vehicle with slides out, and the difference is 3 ft on each side.
Never extend slides before levelling. A slide extended on an uneven coach binds in its tracks.
Hookup service
| Service | Capacity | What it runs |
|---|---|---|
| 30 amp | 3,600 W | One air conditioner, limited appliances |
| 50 amp | 12,000 W | Two air conditioners, everything |
| 20 amp | 2,400 W | Charging only |
A 50 amp coach on a 30 amp pedestal needs an adapter and discipline: one air conditioner at a time, and no electric water heater while the microwave runs.
Fuel type
| Fuel | Typical coach | Cost per mile |
|---|---|---|
| Gasoline | 26–36 ft | $0.45–0.65 |
| Diesel | 36–45 ft | $0.40–0.60, better torque |
| Propane (for appliances) | All | Separate system |
Diesel coaches get better fuel economy at the top end and much better torque on grades. Gas coaches are cheaper to buy and to service.
Tank sizes
| Tank | Typical range |
|---|---|
| Fresh water | 70–100 gal |
| Grey water | 45–70 gal |
| Black water | 40–60 gal |
| Fuel | 80–150 gal |
| Propane | 20–40 gal |
Fresh water usually outlasts the waste tanks. Plan to dump every 4–6 days with two people, sooner with four.
Cost per night
| Item | Cost |
|---|---|
| Full hookup site | $40–85 |
| Public park, electric only | $25–45 |
| Fuel, 300 mi at 8 mpg | $130–170 |
| Campground fees per month | $600–1,200 |
The site fee is the smaller number. Fuel and maintenance dominate the real cost of a Class A trip.
Licence class
| Weight / length | Typical requirement |
|---|---|
| Under 26,000 lb | Standard licence |
| 26,001 lb+ | Some states require a non-commercial class |
| Over 45 ft | Restricted in most states |
| Air brakes | Endorsement in some states |
Rules vary by state and are usually based on weight, not length. Check your own state and any state you plan to cross; a coach legal at home can be illegal two states away.
Living in it versus touring in it
A Class A is at its best parked. Level it, extend the slides, connect water and power, and it becomes a small apartment with a view. The same coach on a touring holiday — a new site every night — spends forty minutes a day being set up and packed down, and the living space is never used properly.
Decide which trip you are taking. A two-week stay at one campground is the Class A’s natural habitat; a two-week loop of national parks is a series of compromises, most of them involving length limits and fuel.
What the Class A is good at
| Strength | Detail |
|---|---|
| Living space | Full kitchen, bathroom, bedroom |
| Weather | Comfortable in rain and cold |
| Setup speed | Minutes once levelled |
| Long stays | Designed for weeks |
What it is bad at
| Weakness | Detail |
|---|---|
| Access | Cannot reach many trailheads |
| Fuel | 6–9 mpg |
| Campsites | Length limits exclude many parks |
| Second vehicle | Often needs a towed car |
The towed car is the answer to the access problem, and it adds a second vehicle, a second insurance policy, and a towing setup.
Winter and heat
A Class A is the easiest shelter to heat and the hardest to cool: two air conditioners on 50 amp service are comfortable in 95 °F, and on 30 amp they are not. In winter, the furnace and the heated tanks make a coach usable below freezing, provided you keep the propane topped up.
That capability is the reason people choose a Class A for long stays in shoulder seasons, when a tent is out of the question.
Where to go next
For the smaller option, see the Class B guide; for power systems, the battery and shore power guide; for trailer options, the trailer comparison.
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