How classic car auctions work: a guide to buying and selling

Table of Contents

• The short version
• Buying a classic car at auction
• Work out your total budget
• Selling a classic car at auction
• A checklist for first-timers
• Where the figures come from

A car rolls in, a chap with a gavel talks very quickly, a hand goes up at the back, and an MGB has a new owner before you have found the right page of the catalogue. Online, the surroundings may be your kitchen, but the excitement is much the same.

The preparation is quieter: read the catalogue, see the car, set your budget and arrange to get it home. Here is how the process works, with a worked example of the costs. Our auction house directory links to individual profiles, with published fees and house rules for 19 UK houses.

The short version

An auction house brings sellers and bidders together. It catalogues and markets the cars, arranges viewings and runs the sale. The winning bid is the hammer price. A sale normally needs to reach the seller's agreed minimum, called the reserve.

1. BrowseChoose your lot
2. ViewCheck the car
3. RegisterArrange to bid
4. BidKeep to your limit
5. PaySettle the invoice
6. CollectBring it home

The buyer usually pays a premium on top of the hammer price. The seller pays commission and, where applicable, an entry fee. Those charges pay for the auction house's work; VAT may also be due. Agree or check the full terms before taking part.

Buying a classic car at auction, step by step

1. Read the catalogue

Each car is a lot, with a number, description, photographs and an estimate. The estimate is an expected hammer price, before buyer's fees. A lot offered without reserve has no minimum selling price.

Read the description, then ask about anything unclear. Phrases such as “believed to be” flag details worth checking. Ask to see the history file and use the free MOT history check for past results, recorded mileages and advisories.

Set a total budget, including fees and transport, before settling on a bidding limit. The worked example below shows how.

2. Register to bid

Register well ahead of the sale. Requirements vary: you may need photo ID, proof of address, a deposit or a card authorisation. Check whether any registration charge is refundable, and how a deposit is returned or credited if you buy.

Allow time for approval, particularly as a new customer. Some houses need several working days. Getting your bidder number sorted early leaves you free to concentrate on the car.

3. Go to the viewing

Take a torch and, if you possibly can, somebody who knows the model. This is where an owners' club earns its subscription. Most clubs have a member who knows exactly where your chosen car rusts and will happily tell you, at length. Our club directory will find you the right one.

Look underneath, compare the chassis and engine numbers with the paperwork, and read the history file. Ask whether the engine can be started and what inspection arrangements are available. Do not assume there will be a test drive or a warranty.

If you cannot get there, ask the house for a condition report and more photographs, or arrange an independent inspection. Make your bid reflect what you have been able to establish about the car.

4. Choose how to bid

Check which methods your chosen sale offers. These are the four usual options at a live auction:

Timed online auctions work differently: each lot has a closing time rather than an auctioneer taking bids. Read the rules for late bids and any extensions to the closing time.

Online fees can differ between a house's own website and an outside platform. Check the route you intend to use with the house. Our auction house profiles list published online charges where available.

At a live sale, the auctioneer sets the pace and takes clear bids. When the hammer falls on your winning bid, you have bought the car. If a lot does not reach its reserve, ask the house whether an offer can be put to the seller afterwards.

Write your limit on the catalogue before bidding starts. It is easier to do the arithmetic before somebody else wants the same MGB.

5. Work out your total budget

Start with the hammer price, add the buyer's premium and its VAT, then include any other charges for your lot and bidding method. Here is one example using the H&H Classics rates recorded in our fees research on 13 November 2026.

Hammer price

£10,000

Buyer’s premium

+ £1,250

VAT on premium (20%)

+ £250

Buyer pays

£11,500

Before transport or any other applicable charges. H&H’s additional online fee of 2% plus VAT would add £240, bringing this example to £11,740.

Work backwards from your budget. With a 12.5% premium plus VAT, divide the money available for the purchase by 1.15. A £10,000 purchase budget allows a hammer bid of £8,695.65, before any other fees. Set aside transport and other costs first, then round your bid down to fit the auction's bidding increments.

Fees are one part of choosing a sale, alongside the cars offered, viewing arrangements and service. Our auction house profiles link to the published terms so you can check the complete picture.

6. Pay

Have your funds ready before you bid. Check the payment deadline, accepted methods and any card limits. If you will be making a large bank transfer, confirm your transfer limit in advance.

Payment may be due straight after the sale or within the next day or two. Use the deadline for your particular auction when making arrangements.

7. Collect the car

Book transport before the sale and confirm when the house can release the car. Allow for payment to clear, and check the collection deadline and any removal or storage charges.

A trailer or transporter is a sensible option if the car's roadworthiness is uncertain. If you plan to drive it home, arrange insurance and check its tax, MOT and roadworthiness requirements first. Ask when you will receive the V5C and history file, and count the keys.

Selling a classic car at auction

Now turn the catalogue round. Talk to houses that handle cars like yours about their recent results, likely bidders, marketing and sale dates. Agree an estimate and reserve, then ask for the charges and expected net proceeds in writing.

The entry fee covers entering the sale and may be payable even if the car does not sell. Seller's commission is deducted from the hammer price, usually with a minimum. Check VAT and any separate insurance or preparation charges too.

Hammer price

£10,000

Commission + entry fee

− £750

VAT on those fees (20%)

− £150

Seller receives

£9,100

Using the H&H rates recorded on 13 November 2026: £500 commission and £250 entry fee, plus £150 VAT. Assumes no other charges.

The reserve deserves a proper conversation. Listen to the house's valuation and ask whether it has any authority to accept an offer below the agreed figure. Our UK classic car auction results can help you get a feel for the market.

Before signing, establish what you owe if the car is unsold or withdrawn, who insures it while it is with the house, and when you will be paid after a successful sale. Then gather the history, spare keys and any useful photographs. Give the cataloguer something to work with.

A checklist for first-timers

• Before registering: read the sale terms and allow time for ID checks and approval.
• Before bidding: inspect the car, choose your bidding method and write down your maximum hammer price, allowing for all fees and transport.
• Before sale day: have funds available and arrange collection within the house's deadline.
• Before leaving: confirm the paperwork, collect the keys and check the handover arrangements.

Go to your first auction with your hands in your pockets. An afternoon watching the bidding is a very pleasant way to learn. Find a sale on our classic car auctions page or browse the auction calendar.

Where the figures come from

The worked examples use rates recorded from auction houses' published pages in our research dated 13 November 2026. They illustrate the calculation for cars; other categories and individual sales may have different terms.

Our auction house profiles carry the research for 19 houses and link to its sources. The worked examples above use H&H's buying terms and selling terms. Check the terms for your chosen sale before bidding or consigning. If a figure has changed, tell us and we will put it right.