@KJA - When I bought my current VW, the dealer I bought it from pretty much matched the best of the Carwow or Drive the Deal price (can’t remember which was the cheaper of the two prices).
@Chuck Norris’s beard; to answer your question ‘are there any hidden extras or disadvantages of the Carwow quotes?’. No, pretty certain there aren’t. The Carwow price is a price quoted by the actual dealer - not Carwow - and if you decide to take up one of the quotes, you deal direct with the dealer; there’s no further involvement by Carwow.
I consider Carwow to be a bit like an aggregator / comparison website for insurance; you input your requirements to Carwow’s website and you’ll get quotes back from a selection of (five?) dealers who have subscribed to be on Carwow. Carwow’s remuneration probably takes the form of either a fee from each dealer providing a quote or a commission from successful dealers in the event of a sale.
The only potential disadvantage I can think of is a dealer quoting the cheapest price might not be particularly local to you, so you may need to travel to collect the car - and also if you’d prefer face to face discussions / meetings with the dealer prior to vehicle collection. Having said that, most dealers will offer a delivery service; driven delivery may be free (would depend upon the dealer‘s delivery policy and the distance involved), but trailered delivery is usually chargeable at so much per mile. I used Carwow’s website a few months ago just to get an idea of possible discounts available off a potential new car purchase in a few months time. The closest dealer to me who provided a quote was around 45-50 miles away from where I live and they were the second cheapest.
It’s also worth noting that Carwow provide a car buying service if you have an existing car to sell; they acquired Wizzle (car buying service) In 2021. My understanding is that it works in the same way as the Motorway car buying service; you provide details of the car you wish to sell with pictures and interested dealers will bid for it. Theres no obligation to accept any of the bids offered by the dealers if you subsequently decide not to sell or you’ve been able to get a better price elsewhere.