What is an ACRISS code?

A four-letter industry code describing a vehicle category: size, body type, transmission and equipment. “CDMR”, for instance, is a compact four-door with manual transmission and air conditioning. Two offers carrying the same code are comparable on the vehicle question, even when the photos show different cars.

Should I take the broker's insurance or the desk's?

That is a judgement call rather than a fixed rule. Broker cover is usually cheaper but often works as reimbursement: the supplier charges you for the damage first and you claim it back afterwards. Cover bought at the desk costs more, but your deposit stays untouched. If fronting that money would hurt, the desk is the calmer option.

Is a debit card enough for the deposit?

Often not. Many suppliers require a genuine credit card, embossed or at least with sufficient available limit, issued in the main driver's name. If the card is refused at the desk, the station can withhold the car and the booking is lost. It is in the rental terms, and it is worth reading before the price decides for you.

Why is the bill at the desk higher than what I booked?

Usually because of items the comparison price never contained: an additional driver, a young-driver fee, out-of-hours pickup, a one-way charge, a prepaid tank, or cover bought at the counter. That is exactly why every mandatory cost belongs in the comparison, not just the headline total.

What is the fastest way to compare two offers?

Open both sets of rate terms side by side and go through only the four things that differ most often: vehicle class, excess, mileage rule and payment method. If those match, the rest is usually detail. If one differs, you have already found the reason for the price gap.

Why can the DiscoverCars checkout total be higher than the price alert?

The alert quotes the price of exactly the variant we compared against your booking. At checkout, optional add-ons can raise the total: Full Coverage if it was not part of the compared variant, Roadtrip Protection, or extras such as child seats. Before you pay, check that only the services you actually want are selected and compare the final total against the amount in the alert.

What does the displayed price include, and how do I reproduce it at checkout?

If the alert says "incl. Full Coverage", its price is part of the total and the alert shows the breakdown rental + protection = total. Actively select the protection at checkout, or check that it is selected; the link alone does not guarantee preselection. If the alert says "with excess", no add-on protection is included. A fictional, rounded example: EUR 70 rental + EUR 50 Full Coverage = EUR 120 comparison price versus a EUR 190 original booking; optional Roadtrip Protection would come on top.

What is the difference between an excess, supplier zero excess and Full Coverage reimbursement?

These are three different mechanisms. With an excess-bearing rate, you carry a deductible if damage occurs. With zero-excess cover from the rental company itself, that deductible is removed in the rental contract. DiscoverCars Full Coverage is instead a reimbursement service from the broker: the rental company may still withhold your excess first, and DiscoverCars then reimburses it under the applicable terms. For matching we treat both routes as an equivalent level of protection, but we always state which mechanism is behind it.

Does Full Coverage remove the deposit?

No, not automatically. Full Coverage is an after-the-fact reimbursement and does not replace the rental company's deposit: the supplier's deposit and card requirements still apply at the desk. Deposit-free options exist as a separate arrangement; whether one applies to your offer is stated in the specific rental conditions. Do not rely on a blanket rule.

What is Roadtrip Protection, and is it the same as Full Coverage?

No. Roadtrip Protection is a separate product for trip disruption after a breakdown or accident, such as onward-travel costs. It does not cover damage to the rental car and replaces neither the supplier's cover nor Full Coverage. It is not included in our comparison prices unless explicitly stated.

Do I have to buy both protection products?

No, both are optional. Whether add-on protection is worthwhile depends on cover you may already have, for example through a credit card or an annual rental-excess policy, and on how much risk you want to carry yourself. Compare the protection level of your original booking against the new offer instead of accepting or declining by default.

Why does the rental desk offer yet another product, and what should I check?

Rental companies earn on their own protection packages and actively offer them, even when you are already covered through the broker. Check on site: which card is accepted for the deposit, whether it must be in the main driver's name, and which damage types (tyres, glass, undercarriage, roof) your existing cover excludes. An upgrade at the desk is never mandatory.

What should I check before cancelling my original booking?

First the cancellation terms and the actual refund amount of your existing booking, then the complete final price of the new offer including every add-on you want. Book the new offer bindingly, wait for the confirmation, and only then cancel. The savings named in the alert are a potential; they only become real once cancellation costs and the final total are known.

Who handles a protection claim or reimbursement?

Always the respective provider: the rental company for the rental contract and damage, DiscoverCars for Full Coverage and its reimbursement, the insurer for Roadtrip Protection. You will find the current terms and processes directly with the provider. RateRewind does not handle claims or reimbursements and never books or cancels on your behalf.

RateRewindComparing rental car offers: the checklist before you rebook

Cheaper has to mean comparable

Comparing rental car offers: the checklist before you rebook

A lower total is a good reason to look closer, but it is not proof of a better deal. The price is the one number both providers print large; the things that actually separate two offers are further down the page. This checklist works through them in the order in which they can cost you money.

Never compare two rental offers on the total alone. Work through them in order: identical stations and times, vehicle class, insurance cover including the excess, the mileage rule, deposit and payment method, fuel policy, and finally the cancellation terms. If any one of those is worse, the cheaper offer is not a bargain but a different product.

Updated: September 9, 2026

1. Identical stations, dates and times

Compare pickup and drop-off location, date and time exactly. A return shifted by two hours can trigger an extra rental day, because rentals are billed in 24-hour units. Check where the station actually is, too: “airport” can mean a desk in the arrivals hall or a twelve-minute shuttle to an industrial estate next door. If you land outside opening hours, an out-of-hours pickup fee is often added.

2. Vehicle class, not the photo

The pictured model is almost always just an example; what is promised is the category. Compare the ACRISS code, or at least size, number of doors, transmission and air conditioning. Automatics are far rarer and dearer in southern Europe than in Germany, so taking the cheaper rate there can leave you with a manual. “Or similar” in the listing means exactly that.

3. Insurance cover and excess

This is where most of the hidden price difference sits. Compare the damage cover, the size of the excess and the exclusions. A rate with a 1,200-euro excess is naturally cheaper than one without. And “zero excess” does not always mean the same thing: sometimes the cover applies directly at the supplier, sometimes you pay for the damage first and reclaim it from the broker afterwards. Tyres, glass, underbody and roof are commonly excluded.

4. Mileage, deposit and payment method

Check whether mileage is unlimited or capped, and hold your planned route against it. Check just as carefully what deposit the supplier blocks and on which card: at many stations it runs between 200 and 1,500 euros and has to be available on a genuine credit card in the main driver's name. Some desks reject debit cards outright, and then the best price in the world is no use to you.

5. Fuel policy and extras

Full-to-full is the only policy under which you pay for what you actually use. Prepaid tanks are usually billed above the local pump price, and whatever you do not burn is not refunded. Extras such as a child seat, satnav or winter tyres are nearly always charged per day: eight euros a day sounds harmless and comes to 112 euros over a fortnight.

6. Additional drivers, young drivers and border crossings

A second driver costs extra with most suppliers, and so does any driver under 25. If you plan to cross a border, check in advance whether it is permitted and what it costs. On cars rented in Italy or Spain, travel into certain neighbouring countries is sometimes ruled out entirely. Items like these rarely appear in the comparison price, but they reliably appear on the final bill.

7. Cancellation terms and the order in which you switch

Finally, put both sets of terms side by side: free cancellation until when, and at what fee afterwards. Only once the new offer matches on all seven points do you book it and wait for the confirmation. You cancel the old reservation after that, never before. RateRewind never cancels or books anything on its own; the decision stays with you.

Frequently asked questions

What is an ACRISS code?: A four-letter industry code describing a vehicle category: size, body type, transmission and equipment. “CDMR”, for instance, is a compact four-door with manual transmission and air conditioning. Two offers carrying the same code are comparable on the vehicle question, even when the photos show different cars.
Should I take the broker's insurance or the desk's?: That is a judgement call rather than a fixed rule. Broker cover is usually cheaper but often works as reimbursement: the supplier charges you for the damage first and you claim it back afterwards. Cover bought at the desk costs more, but your deposit stays untouched. If fronting that money would hurt, the desk is the calmer option.
Is a debit card enough for the deposit?: Often not. Many suppliers require a genuine credit card, embossed or at least with sufficient available limit, issued in the main driver's name. If the card is refused at the desk, the station can withhold the car and the booking is lost. It is in the rental terms, and it is worth reading before the price decides for you.
Why is the bill at the desk higher than what I booked?: Usually because of items the comparison price never contained: an additional driver, a young-driver fee, out-of-hours pickup, a one-way charge, a prepaid tank, or cover bought at the counter. That is exactly why every mandatory cost belongs in the comparison, not just the headline total.
What is the fastest way to compare two offers?: Open both sets of rate terms side by side and go through only the four things that differ most often: vehicle class, excess, mileage rule and payment method. If those match, the rest is usually detail. If one differs, you have already found the reason for the price gap.
Why can the DiscoverCars checkout total be higher than the price alert?: The alert quotes the price of exactly the variant we compared against your booking. At checkout, optional add-ons can raise the total: Full Coverage if it was not part of the compared variant, Roadtrip Protection, or extras such as child seats. Before you pay, check that only the services you actually want are selected and compare the final total against the amount in the alert.
What does the displayed price include, and how do I reproduce it at checkout?: If the alert says "incl. Full Coverage", its price is part of the total and the alert shows the breakdown rental + protection = total. Actively select the protection at checkout, or check that it is selected; the link alone does not guarantee preselection. If the alert says "with excess", no add-on protection is included. A fictional, rounded example: EUR 70 rental + EUR 50 Full Coverage = EUR 120 comparison price versus a EUR 190 original booking; optional Roadtrip Protection would come on top.
What is the difference between an excess, supplier zero excess and Full Coverage reimbursement?: These are three different mechanisms. With an excess-bearing rate, you carry a deductible if damage occurs. With zero-excess cover from the rental company itself, that deductible is removed in the rental contract. DiscoverCars Full Coverage is instead a reimbursement service from the broker: the rental company may still withhold your excess first, and DiscoverCars then reimburses it under the applicable terms. For matching we treat both routes as an equivalent level of protection, but we always state which mechanism is behind it.
Does Full Coverage remove the deposit?: No, not automatically. Full Coverage is an after-the-fact reimbursement and does not replace the rental company's deposit: the supplier's deposit and card requirements still apply at the desk. Deposit-free options exist as a separate arrangement; whether one applies to your offer is stated in the specific rental conditions. Do not rely on a blanket rule.
What is Roadtrip Protection, and is it the same as Full Coverage?: No. Roadtrip Protection is a separate product for trip disruption after a breakdown or accident, such as onward-travel costs. It does not cover damage to the rental car and replaces neither the supplier's cover nor Full Coverage. It is not included in our comparison prices unless explicitly stated.
Do I have to buy both protection products?: No, both are optional. Whether add-on protection is worthwhile depends on cover you may already have, for example through a credit card or an annual rental-excess policy, and on how much risk you want to carry yourself. Compare the protection level of your original booking against the new offer instead of accepting or declining by default.
Why does the rental desk offer yet another product, and what should I check?: Rental companies earn on their own protection packages and actively offer them, even when you are already covered through the broker. Check on site: which card is accepted for the deposit, whether it must be in the main driver's name, and which damage types (tyres, glass, undercarriage, roof) your existing cover excludes. An upgrade at the desk is never mandatory.
What should I check before cancelling my original booking?: First the cancellation terms and the actual refund amount of your existing booking, then the complete final price of the new offer including every add-on you want. Book the new offer bindingly, wait for the confirmation, and only then cancel. The savings named in the alert are a potential; they only become real once cancellation costs and the final total are known.
Who handles a protection claim or reimbursement?: Always the respective provider: the rental company for the rental contract and damage, DiscoverCars for Full Coverage and its reimbursement, the insurer for Roadtrip Protection. You will find the current terms and processes directly with the provider. RateRewind does not handle claims or reimbursements and never books or cancels on your behalf.

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