A hire car promises freedom, but the reality can be a stack of fees, white-knuckle drives and hours lost hunting for parking. A recent breakdown of the downsides of vacation car rentals makes a solid case for leaving the keys behind — and knowing when a rental genuinely earns its place.

Money is the big one. Daily rates in the US run anywhere from $12 to $86 for an economy car and up to $127 for an SUV, before you add insurance, fuel, tolls and hotel parking charges — and you pay for every day you hold the car, even the ones you don't drive it. You can soften the blow: weekly rentals cut roughly 15-25% off the daily rate, picking up from a city-centre branch usually beats airport prices, and off-season trips cost less all round.

Safety is another honest concern. Driving culture varies wildly, and countries including Greece, Turkey, Argentina, South Africa and even the US have reputations for risky roads, whether that's hair-raising mountain passes or potholes that test both suspension and relationships. Norway, Iceland, Japan and the Netherlands, by contrast, are among the easiest places to drive. Before booking, check the US State Department's destination guides for local road customs, and map your route in advance to see if it's somewhere you actually want to drive.

Then there's the carbon question. Passenger vehicles pump out around 4.6 metric tonnes of CO2 per vehicle each year, and switching to public transport can cut an individual's emissions by up to two tonnes. Plenty of destinations make that easy: Japan, Switzerland, South Korea and Mexico all run excellent rail networks, while Taipei, Copenhagen, Montréal and Wellington are a joy by bike. If you truly need a car, most major agencies now offer EVs and hybrids.

There's also the simple fact that driving is work. The driver never properly sees the scenery, airport pick-ups eat into your first and last hours, and city traffic is the opposite of a holiday. Travel writer Rick Steves has long advised skipping cars in European cities entirely — they're best explored on foot or by transit, the way locals do.

Finally, read the fine print. Most rental companies require drivers to be 25, with surcharges for younger and sometimes older drivers. Many countries require an International Driver's Permit ($20 via AAA or AATA — any other site selling them is a scam). Congestion charges apply in London, New York and Singapore, Athens alternates driving days by plate number, and historic centres like Rome and Fes in Morocco ban cars outright. Some spots — Mackinac Island, Catalina Island, Indonesia's Gili Trawangan, Greece's Hydra — don't allow rental cars at all, and don't need them.

The takeaway isn't that rentals are always wrong. For rural road trips and hard-to-reach spots, they're unbeatable. But if you're city-bound, travelling solo, or chasing a slower pace, the bus, train or your own two feet will often save money, stress and emissions.