Sleeping in Rental Cars: My €20/Week “Rent” Hack
In Sicily, I rented a car for €3/day and slept in it every night. Accommodation for the week: €20.
The rate won’t be that low everywhere – €3–€9/day is achievable across much of Europe, though it varies by season. The logic holds: rent cheap, sleep in the car, cut accommodation out of the budget entirely.
It’s not comfortable travel. But it’s cheap, and it works.
I spend less when I travel than when I stay at home. The rental car costs less than my rent.
Finding a Spot
I use park4night to find overnight spots. Free app, community-driven, with free and paid campsites and parking spots – each with user reviews and ratings, mostly from campervan drivers. I go for spots rated above 4/5 with at least a couple of reviews. The range is broad: official sites with hundreds of reviews where you’ll likely encounter other travelers or quiet backroad pull-offs where you won’t. From scenic viewpoints to functional supermarket parking lots – read the reviews.
Legality
Laws on sleeping in a car vary by country. In some – Spain, Norway, Australia – it’s fine as long as no signs prohibit it at a given spot. Others, like Hawaii (oversaturated with tourists), ban it outright. Most fall somewhere in between – check and respect local regulations.
One rule applies everywhere: don’t display “camping behavior”. No chairs or tables outside the car. In some places that’s treated as camping instead of parking, which can make it illegal. It also attracts attention you don’t want.
Rental Contract
Most rental contracts are long, sometimes only in the local language. Before you sign, check if overnight use is explicitly banned. Paste the contract into ChatGPT (or any other AI) and ask it to flag any restrictions on sleeping in the car.
When picking the car, they might ask for an accommodation address. If my first night is a hostel or Airbnb, I use that. They never ask for a full itinerary.
Season
Sleeping in rental cars works best in mild conditions. I prefer nights between 10–20°C (50–68°F). Spring and autumn are the sweet spot in most destinations.
In summer, heat becomes the limiting factor. Night temperatures above 25°C (77°F) are too much for me – I sweat and struggle. I need airflow and switch to tent camping then.
Winter nights can be cozy at 5°C (40°F) with a proper sleeping bag. Below that, it’s still doable, but starts to become a challenge.
Low season is best: fewer people, lower prices, easier parking.
My Sleeping Setup
Flat Surface
In a rental, I fold down the rear seats and sleep on an inflatable mat with a warm sleeping bag.
The most important comfort factor is a flat surface. The step between folded seats and the trunk is usually what causes problems. The other is seats not folding completely flat. I level things out with whatever I have – clothes or bags under the mat. If there’s more to level, I pick up sturdy cardboard boxes that supermarkets throw away anyway.
Of all the gear, the inflatable mat matters most – I use the Therm-a-Rest NeoAir XLite. It’s thick enough to smooth out small imperfections, so even imperfect setups become comfortable.
Space and Length
If you’re taller, sleep diagonally from the front passenger seat to the rear corner. This gives an extra 10–20 cm of space.
There’s usually enough gap between the front seats to push the end of the mat through, reclaiming that space as extra length.
Ventilation and Privacy
Always crack the windows slightly (around 5 mm). Without airflow, the glass fogs up quickly, making it obvious someone is inside and annoying to clear in the morning before driving.
For extra privacy, I use cheap, lightweight window covers from a general store.
Best Cars
When booking a rental, you’re choosing a class and won’t be guaranteed a specific model – that’s how the industry works. Go for Economy class – one step up from the smallest: Renault Clio, Citroën C3, Toyota Aygo X, Škoda Fabia. I’ve booked it on around 10 trips and always slept fine. Compact/Crossover works too – I’ve used it twice, both fine.
Avoid Mini class – too small. Avoid anything bigger than Compact – bigger doesn’t mean better for sleeping, and it will burn more fuel. Ford Tourneo in Sicily was the worst car I’ve slept in.
Search cheap rentals on DiscoverCars. For first-person sleeping audits on 10 cars: Best Rental Cars to Sleep In.
For the full process of getting the cheapest rate: €3/Day Rental Car Guide.
Safety
I’ve never had an issue. A few habits that help: arrive late, leave early, avoid dodgy areas. Read the comments on park4night before committing to a spot – other users might mention something was sketchy.
Park facing out, keep driver’s seat empty. If something feels off, you want to be able to leave in 30 seconds.
Always lock from the inside when ready to sleep. If using the key triggers an alarm, use the lock button next to driver’s seat. In Poland I locked with the key and the alarm triggered every time I moved. It took me a few minutes to figure out the way to avoid that.
Hygiene
Toilets – some public campsites have them, most don’t. Park4night shows a toilet icon when one’s available. Organic Maps app (based on crowd-sourced OSM) lists most public toilets, Google Maps coverage is patchy. In some countries there is plenty of public infrastructure (Switzerland), in others barely any (Italy).
Showers are harder. Public pools, truck stops, beach showers – in Spain I used beach showers most days, no soap allowed, but good enough. Park4night and Organic Maps list shower spots too. I don’t shower every day on trips like this. Wet wipes help.
Food
A car means access to larger supermarkets – Lidl, Aldi. It can halve grocery costs compared to convenience stores.
I usually pick up a 5L water bottle (or two) and refill it at public fountains with potable water. Check Organic Maps for drinking water sources.
Cooking
I use SOTO WindMaster stove, small pot, threaded gas canister (EN 417). Minimal setup, easy to pack in a small carry-on or for a hiking trip. You cannot take gas canisters on planes, you have to pick one up when you land. Hardware (Leroy Merlin), outdoor sports shops (Decathlon) or large supermarkets (Walmart) usually stock them.
Check local regulations on open flames – fire bans apply in some areas, especially in the summer.
Visiting Cities
For busy cities, I park outside the center – search for free parking on Google Maps and check its reviews for safety. If the center is not within walking distance, I use public transit.
If leaving the car overnight to sleep in a hostel, street parking is often a safer option than parking lots – use Street View to check for good neighborhoods.
Tips Summary
- Spots: Use park4night. Filter above 4/5, at least a couple of reviews.
- Legality: Check and respect local regulations.
- No Camping Behavior: No chairs or tables outside the car.
- Rental Contract: Paste it into ChatGPT and ask it to flag overnight restrictions.
- Season: Spring and autumn best for most places. Avoid peak summer heat.
- Mat: A good mat in a bad car beats no mat in a good car.
- Surface: Cardboard boxes from supermarkets fix a bad step between seats and trunk.
- Length: Push the end of the mat between the front seats for extra space.
- Car Class: Economy. Avoid Mini or anything bigger than Compact.
- Safety: Arrive late, leave early. Be ready to drive away. Lock from inside.
- Hygiene: Park4night and Organic Maps for toilets and showers. Wet wipes.
- Food: Large supermarkets. 5L water bottle, refill at public fountains.
- Cooking: Can’t fly with gas canisters – pick one up on arrival. Check for local fire bans.
- Cities: Park outside the center, public transit in.
- Rates: Cheapest car rental by city in Europe – comparison table updated monthly.