How to Save Money on Rental Cars Using

This post contains references to products from one or more of our advertisers. We may receive compensation when you click on links to those products. For an explanation of our Advertising Policy, visit this page.

I have to be honest, I’m very basic when it comes to car rentals. I have elite status with Hertz, which saves me time at the airport, and I love their #1 Rewards program – for every $500 I spend, I get a free day rental, which is often over $90 in value since I’m NYC-based.

However, I have an upcoming trip to Spain and I’m planning to do three days of driving up the Costa Brava, so I wanted a convertible and Hertz had nada. So I then thought I’d test drive, which is a website I’ve been hearing a lot about lately which was created by some fellow Flyertalkers. The whole point of Autoslash is that they make your reservation and then automatically check to see if a lower price is available and if so, they email you and you can re-book at the lower price – for free. Sounds too good to be true, huh? Well here’s my experience:

Simple, clean interface

On Wednesday I searched for a convertible rental for Barcelona airport on my desired dates and within 5 minutes I had a reservation booked at Payless Car rental at Barcelona airport for $403 total and a 250km max mileage per day. I wasn’t crazy about the mileage max, but I figured I could live with it. Overall, the site was very simple, in a good way – they don’t even make you sign-up for an account or store a credit card. I was skeptical that I’d actually get an email about the price decreasing since I’m renting during a peak summer week, however not 24 hours later, I received the following message:

“Hi Brian,

Thanks for booking with AutoSlash. We review each reservation daily to see if we can find additional savings for our customers. We found a better rate on your upcoming rental in Barcelona on x/x/2011 (AutoSlash Trip XXXXXXXXID: ).

You are currently booked with Payless at the rate of $403.98. AutoSlash is able offer you a discounted rate of $368.93 on the identical vehicle with Europcar, a savings of $35.05.

If you’d like to switch from Payless to Europcar and lock in the savings, just reply to this email. If you’d like to stick with Payless, no need to respond. We’ll continue to track rates with Payless, and let you know if we find a better deal.

If you need to change or cancel your reservation, just click here.”

I immediately replied, “Yes, please switch my reservation as long as its the same type of car” and shortly I got a new confirmation with Europcar and to make it even more awesome, my new reservation does not have a daily mileage limit.

I’m really impressed with this site and I have not been compensated (beyond the money they’ve saved me) to say this. It seems like makes their money making a small commission directly from the agency, so this service seems like an easy win if you are looking to save money on your future rentals.

Has anyone else had any experience with or have any other money saving tips for rental cars?

Maximize your rewards, points and cash back. Get a Personalized Recommendation Now