Car Rental FAQ: 30 Most Common Questions Answered

Book 2–4 weeks ahead for most destinations. For peak summer (July–August) and popular locations, book 6–8 weeks ahead. Use a platform with free cancellation so you can rebook if prices drop closer to your travel date.

Online is almost always cheaper — often 30–50% less than walk-up rates. Airport desks charge a premium for last-minute availability. Always book in advance through an aggregator like DiscoverCars or AutoEurope.

Most platforms offer free cancellation up to 24–48 hours before pickup. Some non-refundable rates are cheaper but cannot be cancelled. Always check the cancellation policy at booking — look for "Free cancellation" or "Pay at desk" labels.

Most rental companies require drivers to be at least 21, sometimes 23 for certain vehicle categories. Some accept drivers from 18 with a higher young driver surcharge. Drivers under 25 pay a daily young driver fee. See our under-25 rental guide for details.

Almost always through an aggregator. DiscoverCars, AutoEurope, and RentalCars.com negotiate volume rates that typically undercut direct booking by 15–35%. The car and service at pickup are identical regardless of how you booked.

"Or similar" means the rental company will provide a car in the same category (size, transmission type) but not necessarily the exact model shown. The gearbox type (automatic/manual) you booked is always honoured; the specific make and model may differ based on fleet availability.

CDW (Collision Damage Waiver) limits your financial liability if the rental car is damaged. Standard CDW has an excess (deductible) of €500–€2,000 that you pay before the waiver applies. A zero-excess CDW or Super CDW eliminates this deductible but costs more. See our insurance guide for full details.

Standard CDW: damage covered above the excess (typically €500–€2,000, which you pay first). Super CDW / Zero Excess: all damage covered with no deductible. The upgrade costs €5–€25/day depending on the provider. Standalone excess waiver policies from specialist insurers are usually cheaper than the rental company's Super CDW.

Some comprehensive travel insurance policies include rental car excess cover — check yours carefully. Look for "car hire excess insurance" or "rental vehicle excess" in the policy schedule. If covered, you may not need to buy excess cover from the rental company. For international rentals, your home country's car insurance rarely covers the rental vehicle.

Standard CDW typically excludes: windscreen and glass, tyres, undercarriage, roof, interior, and mirrors. Separate glass/tyre waivers cover these. A "full" or "zero excess" CDW from the rental company usually includes glass and tyres, but check the specific policy wording.

Not if you have comprehensive travel insurance that includes personal accident and medical evacuation cover — which most good policies do. PAI from the rental desk is generally an unnecessary duplication. The best approach is to carry good travel insurance and decline PAI.

You need: (1) your driving licence, (2) your passport or national ID, (3) the booking confirmation, and (4) the credit card used for booking. All four must be present and match the booking. Without the credit card used to book, some providers will refuse the rental or require a new booking.

For the security deposit, most providers require a credit card. Some accept debit cards with a higher deposit amount (sometimes 150–200% of the rental value) and additional ID checks. Check your specific provider's policy before travel to avoid surprises at pickup.

A deposit block (pre-authorisation) is a hold placed on your credit card at pickup — not a charge. It covers potential damage, fuel, or traffic fines. Typically €200–€1,500 depending on the car category. It's released within 7–28 days of returning the car, depending on your bank's processing time.

Yes. GPS rental, prepaid fuel, PAI, and the super CDW upsell are all optional. You can politely decline each one. The mandatory items are: the base CDW (included in your rate), third-party liability insurance (legally required), and the vehicle's value deposit hold.

Walk around the entire vehicle and record video of all sides — including the roof, bumpers, and windows — before accepting keys. Ensure every existing scratch, dent, or chip is noted on the damage form and get a copy. Email yourself the video immediately for a timestamp. This protects you against unjust damage claims on return.

Only drivers named on the rental agreement can legally drive. Adding an additional driver costs €3–€15/day and requires the additional driver to be present at pickup with their driving licence. Unlisted drivers driving the car voids all insurance.

In most cases yes, but you must declare all countries you intend to visit at the time of booking. Crossing into an unlisted country voids your insurance. Some countries are prohibited entirely (Russia, Belarus). See our cross-border guide for full details.

Call the 24/7 breakdown number listed in your rental agreement — save this number before you set out. Do not attempt repairs yourself. If the car is undrivable, the rental company will arrange a replacement or recovery. Keep the rental agreement accessible at all times.

Traffic fines are your responsibility. When a camera fine or parking ticket arrives, the rental company will forward it to you and charge an administrative fee (typically €15–€35) for processing. In European countries with automated toll roads, ensure you pay electronically or the rental company will pass on the charge plus a fee.

Check the rental agreement and the fuel cap sticker before filling up. Putting the wrong fuel type (e.g., diesel in a petrol car) is driver error and is not covered by CDW — repairs can cost €1,000–€5,000. Most rental cars in Europe use diesel (gasoil) or regular unleaded (95 octane). If unsure, ask the agent at pickup.

Winter tyres are legally required in several European countries from November to April, including Lithuania, Latvia, Estonia, Austria, Czech Republic, and are highly recommended in Scandinavia and alpine regions. Most rental cars in these countries are fitted with winter tyres during winter months — confirm with your provider. See our winter driving guide for country-specific rules.

For full-to-full policies (the standard and recommended option), return the car with a full tank. Fill up at a petrol station near the return location — not using the rental company's own refuelling service, which charges a steep premium per litre. Keep your fuel receipt as proof of the fill-up.

Most companies give a grace period of 15–29 minutes. Beyond that, you may be charged for an additional day. If you know you'll be late, call the rental company in advance — most can extend the rental for a partial day fee if the car is not already booked out.

Yes. Charges for damage found on inspection, outstanding traffic fines, and fuel shortfalls can be applied to your card days or weeks after return. Keep your rental receipt and pre-rental photos for at least 60 days. If an unjustified charge appears, dispute it through your credit card issuer's chargeback process.

Call the rental company's emergency number immediately. You'll also need to file a police report in most European countries for accidents involving third parties or significant damage. The rental company will arrange a replacement vehicle subject to their policy. Your CDW/excess waiver covers the damage costs up to the insured amount.