4.0
The service during pickup was not good. The customer service representative was very aggressive and tried to get us to buy more insurance through ACE although we purchased additional insurance through Kayak for this rental and told her this. She also tried to get us to buy a policy ($15/day) to cover tolls in Denver and the surrounding area, warning us if we didn't, they'd charge us $50 plus all the tolls. We told her we weren't planning on being in Denver for more than a day and she said 'you're just not getting the math. This will save yo money.' However, we soon discovered toll roads (or express lanes) are completely optional (and rarely save any time) in Colorado. It was very deceptive and she was not friendly. Also, we booked an SUV and the car we got hardly qualified as an SUV and was not great at handling the roads/elevations in Colorado (it was more of a city car). I'll never use ACE again.Reviewed 7 Jun 2026
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2.0
I was not allowed to pickup a vehicle as they said it couldn’t be driven out of state. This was never mentioned at time of reservation. We asked for a refund which I have yet to receive and will probably never receive. I would never ever recommend ACE even to an enemy. We had to make a sudden change for Enterprise and they were very helpful and Enterprise even gave us an upgrade. Avoid ACE if at all possible, they may have cheaper rates but the service is horrendous, and they still owe me a refund. Buyer beware read the fine print online always. We originally went through Kayak, which then connected to Expedia, and finally to ACE. ACE and Expedia both have said they can’t give me a refund for services they never provided. I feel robbed and this ruined an already somber trip for a memorial service for family. Thanks for taking our money for nothing you thieves. Never again! Worst rental experience ever, and I’ve even driven a rental years ago from a major chain that had dog hair and urine in the back hatch area. ACE Rental Car is hands down the new winner for number one worst rental experience ever. And I didn’t even touch keys for one of their vehicles because I never picked one up, we asked for our refund in person at time of pickup. Give me my money back you evil people! A good company would make this right. All I’ve gotten is the runaround and rejection emails blaming me or the other company either Expedia or ACE. You need to make your contracts more clear so people know the rental is only allowed to travel within the state rented. I can understand not driving out of the country, but sorry we mentioned we were going out of state, we could have lied and you would have likely tracked us by gps anyway and screwed us over even worse with some stupid hidden fee. Thank you so little for the added stress financially and mentally. I hope you go out of business! The people of Denver don’t need more crime! D O N O T R E N T F R O M A C EReviewed 26 Apr 2026
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8.0
Good vehicle.Reviewed 16 Apr 2026
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10.0
Ít should not charge in case of extension within 2 hours like we have been offering by Thrifty and DollarsReviewed 29 Mar 2026
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10.0
Their internet was down and took longer, but still wasn't too bad using manual system.Reviewed 15 Feb 2026
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2.0
Steer clear of Matt. He lied to us and told us we need to get liability insurance through the company because it’s the law. I heard him tell another customer that Colorado is a no-fault state to incentivize him to get insurance through Ace. We told Matt we have through our insurance and he tried telling us Colorado has a higher minimum. It was ridiculous. He looked so lethargic and apathetic. He hung out on his phone while getting our papers signed. Totally not impressed. I saw him scam two other customers as I sat there while my husband got our car. The cherry on top was he was flirting with two older women, who had no idea they just got scammed into buying additional insurance. And at the end he handed them a paper asking them to write a 5 star review. Very smart, ask the people who don’t know they just spent a few hundred dollars. Anyway, I definitely would pay the extra few bucks to rent from a reputable company and not deal with companies that hire people like Matt.Reviewed 26 Aug 2025
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2.0
In the middle of nowhere, not near any of the other rental companies. The vehicle was dented and damaged. The seat belt indicator was faulty, and the seat belt had to be buckled when no one was sitting in the seat. Seat indicators are related to the airbag system and therefore the car should have never been rented. Hidden fees for everything, including a $375 charge if you wanted to use a license plate toll. I was also charged $12.99 for one gallon of gas because they said that I did not return it, "completely full".Reviewed 4 Aug 2025
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2.0
Wait time was 3+ hours. Staff was very slow in getting through each customer. Horrible and never renting with y'all againReviewed 6 Jul 2025
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10.0
Car smelled a bit funny when the AC was running. Otherwise everything was great.Reviewed 11 Apr 2025
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10.0
I liked that Ace filmed my vehicle as I left the lot so that any damage was documented. The processing time of picking up the car could be improved. Just copy Hertz!Reviewed 31 Mar 2025
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4.0
The agent at ACE counter in Denver was very poor. He was more concerned with trying to sell me the toll pass which was a rip off. He didn't go over contract.Reviewed 18 Mar 2025
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6.0
There was no option in the booking search function to specify an AWD or 4WD . We were flying into Colorado to go skiing. We got upsold for US$40 per day to an AWD. Really had no choice at that point. The upgraded car was great. We booked through QEED so it was probably more their issue than ACE'sReviewed 4 Mar 2025
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