European rental car companies make a significant portion of their profit from extras and accessories. The base rental price gets you in the door, but the add-ons at the counter — GPS, child seats, roof racks, Wi-Fi hotspots — can easily double your total bill. Knowing which to accept, which to decline, and which to bring yourself is essential for keeping costs under control.
Rental companies typically charge €8–15 per day for a GPS unit, which can add €100+ to a two-week rental. In almost every case, this is a waste of money. Your smartphone with offline maps (Google Maps or Maps.me) provides better navigation with real-time traffic data. Download offline maps for your destination countries before you leave.
The one scenario where a rental GPS makes sense: if you're driving in remote areas with poor mobile coverage (rural Iceland, Norwegian fjords, Scottish Highlands) and don't have a reliable phone mount. Even then, buying a €15 phone mount and downloading offline maps is cheaper than renting a GPS for more than two days.
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Child seat rental typically costs €5–12 per day with a cap of €50–80 per rental in some countries. EU law requires appropriate child restraints for children under 135–150cm (varies by country), and enforcement is strict — fines range from €60 in France to €330 in Spain.
For short trips (under 5 days), renting makes sense for the convenience. For longer trips, consider bringing your own. Most airlines allow car seats as free checked luggage, and you'll have a seat you know is properly installed and comfortable for your child. If you do rent, always pre-book — child seats are frequently unavailable at the counter, especially in summer.
In winter, snow chains or winter tyres are legally required in many European countries. Austria requires winter tyres from November to April. France mandates snow chains or winter tyres in mountainous areas (loi montagne). Germany requires winter tyres in winter conditions (no fixed dates). Italy requires chains or winter tyres on certain roads from November to April.
Rental companies charge €5–15/day for snow chains, and winter tyres may or may not be included depending on the location and season. If you're renting in winter, confirm winter tyres are fitted before booking. If you need chains, renting from the company is usually the best option since they'll provide the correct size for your vehicle.
Adding a second driver costs €5–12 per day at most companies, and it adds up fast on longer trips. Some aggregators include a free additional driver as a booking perk — DiscoverCars and AutoEurope frequently offer this. Budget and Sixt occasionally run promotions with free additional drivers in certain markets.
Important: driving without being listed on the rental agreement voids all insurance coverage. If the unnamed driver has an accident, you'll be liable for the full value of the vehicle. Never skip adding a driver to save money — if you're caught, the financial risk far outweighs the cost.
Rental Wi-Fi devices cost €6–10/day. Since EU roaming regulations eliminated roaming charges within the EU for European SIM cards, this is unnecessary for most European travelers. If you're coming from outside the EU, buying a local prepaid SIM (available at any airport) for €10–20 with 10–30GB of data is far more economical than a rental hotspot.
Specialty racks cost €10–20/day and must be pre-booked. Availability is limited, especially for bike racks in popular cycling destinations. If you're transporting bikes or skis, confirm rack availability at booking time, not at pickup. Also verify the rack type is compatible with your equipment. Some rental locations can only provide basic roof bars, not full bike carriers.
Most base rentals include basic roadside assistance (towing after a mechanical breakdown). The upsell package, typically €3–7/day, extends coverage to flat tyres, dead batteries, lockouts, and misfuelling. Whether this is worth it depends on your route: for highway-only trips in Western Europe, basic coverage is fine. For rural routes in Eastern Europe or Iceland, the extended package provides genuine peace of mind.
Pack these items to avoid overpaying at the counter:
Decline the GPS, bring a phone mount, and download offline maps. Pre-book child seats for short trips or bring your own for longer ones. Always add secondary drivers to the policy. For winter trips, confirm winter tyres are included and rent chains if needed. Skip the Wi-Fi hotspot entirely — use a local SIM or EU roaming instead. The savings from being strategic about accessories can easily reach €100–200 per trip.
Bookmark this guide and check back before your trip — car rental prices and policies change frequently.
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Almost never. At 8-15 euros per day, a rental GPS is one of the worst value add-ons. Use your smartphone with offline Google Maps instead, and bring a 10-15 euro phone mount from home. You'll get better navigation with real-time traffic data at a fraction of the cost.
For trips under 5 days, renting is convenient (5-12 euros/day). For longer trips, bring your own — most airlines allow car seats as free checked luggage. Either way, always pre-book child seats as they frequently sell out at the counter during peak season.
It depends on the country and route. Austria, France (mountain areas), and Italy (certain roads) legally require winter tyres or chains from November to April. Germany requires winter tyres in winter conditions. Confirm winter tyres are fitted when booking, and rent chains from the rental company if needed.
All insurance coverage is voided. You become personally liable for the full value of the vehicle, which could be tens of thousands of euros. Always pay to add additional drivers to the rental agreement — the 5-12 euro daily fee is trivial compared to the financial risk.
Bring a phone mount (replaces GPS rental), USB car charger, reflective vests (legally required in France, Spain, Italy, Austria), and your own child seat for trips over 5 days. These items cost under 30 euros total but can save 100-200 euros in rental add-on fees.
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