How we collect prices

Every price, rating and rental condition on TREWL's car rental pages comes from real offers that people saw when they searched for a car on TREWL. This page explains what we store, how we turn it into the numbers you see, and where the limits are.

Where the data comes from

Searches on TREWL run on CarTrawler's booking engine, which returns live offers from rental companies. When the results load, we store each offer:

• the rental company and its desk (airport, train station, port or city office)
• the car model, its class (ACRISS code), transmission, fuel type, seats and bags
• the price per day for the searched dates, converted to US dollars
• the terms shown with the offer: mileage, fuel policy, included insurance and excess, deposit and accepted cards, cancellation, driver age fees, extras and opening hours
• the rental company's customer rating and number of reviews at that desk, as CarTrawler shows them

We keep one record per rental company, car model and class at each desk and update it with the latest price seen. The offer records behind these pages contain no personal data.

Time window

Pages use offers seen in the last 12 months. If a place has no offer that recent, its page uses its last 12 months of offers, says when prices were last seen ("Prices last seen in July 2025") and shows no price in its title. Offers under $5 a day are treated as data errors and left out.

Each block says the month of its newest offer, for example "Based on offers seen in the 12 months to Oct 2026." Blocks based on 1,000 offers or more also say how many.

Across the site, we hold 253,744 offers seen in the last 12 months. Our pages cover 14,460 pick-up points in 145 countries, and not all of them have offers that recent.

How prices are calculated

• From: one in ten offers of a car class were cheaper (the 10th percentile). A page's headline price is the lowest "from" price of its car classes. We don't use the single cheapest offer, because one unusual price doesn't show what most searches find.
• Typical: half of the offers of the class were cheaper (the median). It is shown when a class has at least 10 offers.
• Average: the mean price per day of the offers, also shown only from 10 offers.

Prices are per day for the dates people searched, worked out in US dollars and shown in your currency at the day's exchange rate, so they mix seasons and rental lengths. They are not quotes: the price you pay is the one shown in search results when you book.

Ratings and reviews

Ratings are CarTrawler's customer reviews of each rental desk, shown with the offers: an overall score out of 10, a rounded number of reviews ("1,000+") and the average wait at the desk. Country and company ratings average the desks, weighted by their number of reviews.

Who rents and what is popular

The "who rents" box counts searches made on TREWL since October 2017: where renters live, how long they rent and where they return the car. It shows only where a place has at least 100 searches. "Popular" car types and companies are the ones people opened most often in search results in the last 12 months.

Driving rules

Speed limits and drink-drive limits on country pages come from the WHO Global status report on road safety 2023, checked against the EU's Your Europe road rules for European countries. Road charges (vignettes and tolls) come from national road operators. We checked them in October 2026. Local signs always apply.

How often the data updates

New searches add offers all the time, and page data is recomputed every night. A place with few searches shows fewer and older offers than a busy airport, and its notes say so.