TripAdvisor fails to stop highest-ranked hotels being boosted by fake reviews, Which? finds

TripAdvisor is failing to stop a flood of fake and suspicious five-star reviews from artificially boosting the ratings of some of its highest-ranked hotels, a Which? Travel investigation has revealed.

The consumer champion analysed almost 250,000 reviews for the top 10 ranked hotels in 10 popular tourist destinations around the world – and flagged one in seven of these 100 hotels as having blatant hallmarks of fake reviews, while others raised serious concerns.

Which? Travel reported 15 of the worst cases to TripAdvisor and it admitted that 14 of these had already been caught with fake positive reviews in the last year.

The world’s biggest travel website revealed six of these hotels had been penalised for breaking guidelines and two had previously been given a “red badge” warning for suspicious activity, yet this was not made clear to travellers and a highly suspicious pattern of reviews had continued to appear – suggesting a lack of serious ongoing oversight and action to address repeated abuse of the system.

Following Which? Travel’s investigation, TripAdvisor has taken down hundreds of reviews, while Travelodge admitted having previously been hit with the website’s most severe red badge warning for suspicious reviews after two of its hotels in London were flagged in the research.

There were striking results in the Middle East, with a hugely suspicious pattern of reviews at the ‘best hotel’ in the whole of Jordan. The hotel denies doing anything wrong but shortly afterwards TripAdvisor removed 730 of its five-star reviews.

Despite this it is still listed as one of the 10 best-ranked hotels in the increasingly popular holiday destination, with holidaymakers none the wiser.

At the best hotel in Cairo, according to TripAdvisor’s traveller rankings, a startling 79 per cent of five-star reviews were left by profiles that had no other contributions on the site. Compare that with the results for three-star reviews – a rating less likely to be fake – at just 14 per cent. Shortly after Which? shared its findings, TripAdvisor removed reviews from the property and it lost its status as the official ‘best hotel in Cairo’.

Some of the most concerning findings were in Las Vegas, where two of the 10 highest ranked hotels had received almost half (48% and 41%) of their hundreds of five-star ratings from first-time reviewers who had never made any other TripAdvisor contributions before or since – raising suspicions that the reviews could be fake. Two more of the city’s top 10 hotels had results that were less dramatic but caused concerns.

By contrast, another hotel near the top of the Las Vegas rankings had just three per cent of its almost 2,000 five-star reviews from once-only reviewers. This was consistent with the proportion of once-only reviewers giving three stars.

Some of the best-rated hotels in London, Paris, Barcelona and Cape Town gave some reason for suspicion but had none of the similar extreme patterns.

Which? Travel also compared 10 London hotels at the two biggest UK chains, Premier Inn and Travelodge.

While Premier Inn did not arouse suspicion, at two of the Travelodges, almost half of the hundreds of five-star reviews – 48 per cent and 40 per cent respectively – came from first-time contributors who’d never reviewed anywhere else. In contrast the figure for once-only three-star reviews was much lower.

TripAdvisor admitted that earlier this year the latter hotel – Travelodge Wembley Central – had already been given its red warning badge. This is the site’s most severe warning, letting travellers know that reviews may have been manipulated by the business and is reserved for cases where a hotel ‘repeatedly fails to remedy its behaviour and refuses to cooperate with TripAdvisor’s investigators.’

Which? believes this research raises a number of serious issues with reviews on TripAdvisor.

Reviews are not verified and therefore it is not clear whether reviewers have even stayed at a hotel when they rate it.

Travellers do not know whether hotels have been trying to cheat the system. Despite 14 of the hotels flagged having had at least one suspicious review removed in the last year, none of them carried any kind of warning at the time Which? looked. And TripAdvisor’s most serious warning – the red badge – remains on hotel sites for just a matter of weeks.

The findings come as the Competition and Markets Authority (CMA) is carrying out a programme of work aimed at tackling the increasing problem of fake and misleading reviews.

Which? believes the regulator should ensure the scope of its investigation includes online sites that host reviews, and that platforms like TripAdvisor should be more responsible for the information presented to consumers.

Which? Travel’s Naomi Leach, said:

“TripAdvisor’s failure to stop fake reviews and take strong action against hotels that abuse the system risks misleading millions of travellers and potentially ruining their holidays.

“Sites like TripAdvisor must do more to ensure the information on their platforms is reliable and if they continue to fall short, they should be compelled to make changes so holidaymakers are no longer at risk of being duped by a flood of fake reviews.”

Which?’s top tips on how to spot fake reviews


Look at the ‘Travellers Talk about’ section where it highlights phrases used repeatedly by reviewers. If you see ‘wonderful Stu’ mentioned dozens of times using similar language, it might be that Stu is personally coordinating reviews or, just as likely, fakers are using the template they’ve been given.

Check timing

Check when the reviews were posted. A flood of five-star reviews after some bad reviews could indicate that a concerted ‘push’ for positive reviews has been coordinated. A one-off? Are the majority of reviews from people who’ve never written anything else on the site? A great hotel will have many five-star reviews from frequent contributors.

Use – although TripAdvisor disputes its methods, it correctly gave its lowest reliability rating of ‘F’ to the hotel that subsequently had 730 reviews removed.

Low scores elsewhere

Check reviews on other sites. The hotels where Which? found strong evidence of fake reviews tended to have lower scores on Yelp and Expedia.

Notes to editor

  • Which? Travel analysed 247,277 TripAdvisor reviews of the top 10 highest ranked hotels (by travellers) in London, Paris, Barcelona, Rome, Cape Town, Punta Cana, Jordan Las Vegas and Cairo, plus 10 Premier Inns and 10 Travelodges in London. The analysis compared the proportion of first-time three-star reviews, which it can reasonably be assumed are rarely faked, against the proportion of first-time reviewers who left five-star reviews.
  • Online reviews influence an estimated £23 billion of transactions a year in the UK alone, according to the CMA.
  • Travelodge operates more than 560 hotels and 40,000 guest bedrooms across the UK as well as in Ireland and Spain and finished towards the bottom of Which?’s most recent hotel chains survey.
  • Video available for use

Right of replies


“The analysis presented by Which is based on a flawed understanding of fake review patterns and is reliant on too many assumptions, and too little data.

“It is far too simplistic to assume all first-time reviewers are suspicious. Every genuine reviewer in the world is at some point a first-time reviewer.

“Accurate fraud detection requires analysis of a wide range of data-points, such as IP information, location data or details about the device an account was using when submitting a review. This crucial data is missing from Which’s analysis, and therefore its findings do not and cannot provide a reliable indication of the true volume of review fraud.

“By contrast, we employ sophisticated fraud detection technology that is able to analyse hundreds of data-points based on a knowledge and understanding of review patterns gained from tracking hundreds of millions of reviews over a near twenty year period. This includes an ability track and analyse first-time reviews in far more detail and with far more rigour than Which’s team was able to do. We also have an industry-leading team of fraud investigators who work tirelessly to protect the site from fake reviews.

“We are confident our approach works, and is one of the reasons we continue to retain the trust of many millions of consumers worldwide. They know from their own experience of using TripAdvisor that it is a source of useful and accurate information on which they can rely.”


“The integrity of customer reviews for our hotels is extremely important to us and we receive more than 70,000 reviews every year. We hold a strong established relationship with TripAdvisor.

“We did experience a breakdown in our internal communication when TripAdvisor identified an irregular pattern of reviews at our Wembley Central Travelodge Hotel that needed investigating. Unfortunately on this occasion that matter was not managed effectively within the timeframe, and we have taken appropriate action to ensure this does not happen again.

“Wembley Central Travelodge has undergone a full refurbishment earlier this year and we are satisfied that the hotel reviews accurately reflect the customer experience at the hotel.”

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