10 Mistakes Used Car Buyers Make Before Even Viewing the Car

As a vehicle inspector, I see plenty of problems once I arrive at a car.

Oil leaks. Worn tyres. Poor accident repairs. Suspension faults. Warning lights. Missing service history. Diagnostic faults.

But there’s another side of used-car buying that doesn’t get enough attention.

Many buyers make their biggest mistakes before anybody has even inspected the car.

They see the right model at what looks like the right price and immediately become emotionally involved.

They’ve already imagined driving it home.

Then the seller says:

“I’ve got another person coming this afternoon.”

Suddenly the buyer is worried about losing the car.

A deposit gets transferred.

The MOT history hasn’t been checked properly. Nobody has confirmed the service history. The seller hasn’t agreed to an independent inspection. The buyer hasn’t even established whether the deposit is refundable.

By the time I become involved, the buyer sometimes feels committed to a car they haven’t actually seen.

That’s backwards.

Before arranging a viewing, you should be investigating whether the car is even worth your time.

Here are ten mistakes I regularly see buyers make before viewing a used car.

1. Falling in Love With the Advert

This is probably where most problems begin.

Good photography sells cars.

The vehicle has been washed, polished and photographed from its best angles. The advert describes it as:

• Immaculate
• Excellent condition
• Fully maintained
• Drives perfectly
• First to see will buy
• Needs nothing
• Very reluctant sale

Treat these as descriptions, not evidence.

You haven’t inspected the car yet.

You don’t know whether the engine is leaking oil.

You don’t know whether the tyres are worn on their inner edges.

You don’t know whether the air conditioning works.

You don’t know whether previous paint repairs are good.

You don’t know whether the gearbox behaves correctly when hot.

The advert is the beginning of your investigation, not the conclusion.

I recommend saving a copy or screenshots of the original advert before proceeding. If descriptions, mileage, specification or promises become important later, you have a record of what was advertised.

2. Showing the Seller That You Desperately Want the Car

This is a psychological mistake.

Buyers sometimes contact a seller and immediately say:

“I’ve been looking for this exact specification for six months.”

Or:

“I desperately need a car this weekend.”

Or:

“This is exactly what I’ve been looking for.”

You’ve just told the seller something important.

You want their car more than you want a good deal.

I wouldn’t approach a used-car purchase like that.

Be polite and genuinely interested, but remain neutral.

You are investigating a vehicle.

You haven’t decided to buy it.

There is an important difference between:

“I definitely want it. When can I collect?”

and:

“I’m interested. I’d like to check the history and condition before deciding.”

The second position gives you room to think.

Remember that the seller wants to sell the car.

You don’t need to prove how much you want to buy it.

3. Believing the “Someone Else Is Coming” Story

This is one of the most common pressure points in used-car buying.

You’ve barely asked your first question and suddenly hear:

“I’ve got someone else viewing it at six.”

Maybe they do.

A good used car at a sensible price can genuinely attract several buyers.

But whether another buyer exists isn’t actually the important part.

The important part is whether that information changes your standards.

If you needed to check the MOT history before hearing about another buyer, you still need to check it afterwards.

If you wanted an independent vehicle inspection, another interested buyer doesn’t suddenly make the inspection unnecessary.

If you weren’t comfortable paying a deposit five minutes ago, somebody else supposedly viewing the car shouldn’t change that.

Pressure should never replace due diligence.

My rule is simple:

Never let the seller’s urgency become your emergency.

If somebody else buys the car while you’re carrying out reasonable checks, there will usually be another used car.

4. Paying a Deposit Without Agreeing the Terms

This is where a casual conversation can become expensive.

The seller says:

“Just send £300 and I’ll take the advert down.”

Before transferring anything, stop.

What exactly are you agreeing to?

Ask:

• Is the deposit refundable?
• Under what circumstances?
• Is the purchase subject to inspection?
• Is it subject to an acceptable history check?
• What if the vehicle differs materially from the advert?
• What if an important mechanical problem is discovered?
• How long will the car be held?
• Is the deposit being deducted from the purchase price?

Get important terms in writing.

Don’t assume you can simply change your mind and automatically receive the money back.

Equally, don’t assume that because somebody says “refundable deposit” on the phone, there can never be a dispute.

The deposit should protect an agreed transaction, not pressure you into completing a purchase you haven’t properly investigated.

5. Not Checking the MOT History Before Travelling

This takes minutes and can save you a wasted journey.

GOV.UK’s MOT history service can show previous results, recorded mileage and defects identified during MOT tests.

Don’t look only at whether the car currently has an MOT.

Read backwards.

I look for patterns such as:

• Repeated corrosion
• Oil leaks
• Suspension problems
• Brake defects
• Recurring tyre issues
• Emissions problems
• Mileage inconsistencies
• The same advisories appearing repeatedly

One advisory isn’t necessarily a reason to reject a car.

What interests me is the pattern.

If a vehicle has repeatedly been presented for MOT with similar maintenance issues, I want to know whether those problems were subsequently repaired.

Use the MOT history to prepare questions before travelling.

For example:

“I noticed corrosion was advised on the last two MOTs. Has that now been repaired?”

That’s considerably more useful than discovering it after travelling 150 miles.

6. Not Asking for Service History Before the Viewing

Sellers regularly advertise:

FULL SERVICE HISTORY

Good.

Ask them to show you.

Before travelling a long distance, I would request photographs or appropriate evidence of the service history where practical.

I want to establish:

• Is it genuinely full?
• Is it paper or digital?
• When was the last service?
• At what mileage?
• Are there major gaps?
• Is there evidence of important scheduled maintenance?
• Has the timing belt been changed where applicable?
• Are invoices available?
• Is it dealer, specialist or independent history?

Don’t expect every seller to photograph a 100-page maintenance folder.

The objective is simply to establish whether the claimed history appears to exist.

If the advert says full service history and the seller suddenly says:

“I think the previous owner lost the book.”

you’ve discovered something useful before wasting your time.

7. Skipping the Vehicle History Check Until Afterwards

Some buyers wait until they’re standing next to the car before checking its recorded history.

I’d rather investigate earlier.

A suitable car history check can help identify available information relating to areas such as:

• Outstanding finance
• Insurance write-off records
• Theft records
• Mileage information
• Registration changes
• Vehicle identity
• Import or export information where available

If the history reveals something important, you can investigate it before travelling.

But remember that a clean history report doesn’t prove the car is mechanically good.

Recorded history and physical condition are different things.

A history check tells you what is present in the data sources used by that provider.

A car inspection tells you what is physically in front of the inspector.

I want both stories to agree.

8. Not Asking the Right Questions on the Phone

Instead of asking:

“Is everything OK with it?”

ask specific questions.

What do you expect the seller to say to the first question?

“No, it’s terrible.”

Of course not.

Ask questions that produce useful information.

For example:

• How long have you owned the vehicle?
• Why are you selling it?
• Are there any warning lights?
• Are there any known mechanical faults?
• Does the air conditioning work?
• Has it had any bodywork or paint repairs?
• Has it been involved in an accident to your knowledge?
• Are there any fluid leaks?
• Does it use oil or coolant?
• Are both keys present?
• When was it last serviced?
• Is the service history available?
• Are there any outstanding recalls you know about?
• Are there any modifications?
• Is there outstanding finance?
• Is the V5C available?
• Will the car be cold when I arrive?
• Are you happy for it to be independently inspected?

Write down the answers.

Then compare them with the car later.

That’s when telephone questions become genuinely useful.

9. Not Asking Whether an Independent Inspection Is Allowed

If you intend to arrange a professional inspection, establish that before paying money or travelling.

Ask directly:

“Are you happy for me to arrange an independent pre-purchase inspection of the vehicle?”

A seller declining an inspection does not automatically prove they are hiding something.

There can be legitimate issues involving location, insurance, access, time or dealership policy.

But you need to know about those restrictions before committing yourself.

If I’m going to inspect a car, I also want the seller to understand that I may need reasonable access to the vehicle.

Depending on the inspection and circumstances, that can include checking:

• Engine
• Transmission
• Suspension
• Steering
• Brakes
• Tyres
• Bodywork
• Underbody
• Electrical equipment
• Diagnostics
• VIN
• Service history
• MOT information
• Road-test behaviour

Don’t wait until you’ve transferred a deposit to discover that the seller doesn’t permit independent inspections.

10. Travelling Too Far Before Doing Your Homework

This is the mistake that ties everything together.

Imagine you’ve found a BMW 330d 220 miles away.

You wake up at 5am.

You drive four hours.

You spend £70 on fuel.

You’ve brought your partner.

You’ve taken a day off work.

You arrive exhausted.

Now the car isn’t quite as described.

What happens?

You start negotiating with yourself.

“The tyres aren’t that bad.”

“That noise might be normal.”

“The paint repair doesn’t look terrible.”

“I’ve come all this way.”

That last sentence is dangerous.

The money and time you’ve already spent travelling shouldn’t determine whether you spend another £15,000 on the wrong car.

This is why I recommend doing as much research as possible before leaving home.

Check the advert.

Check the MOT.

Check the history.

Ask about servicing.

Ask about faults.

Ask about previous repairs.

Confirm inspection access.

Clarify the deposit.

Then decide whether the car deserves a viewing.

Bonus Mistake: Not Asking for a Cold Start

This can be surprisingly useful.

If practical, ask the seller not to warm the car immediately before your viewing or inspection.

Why?

Because some problems are more noticeable when an engine is genuinely cold.

Depending on the engine, that might include:

• Difficult starting
• Timing-chain noise
• Excessive smoke
• Uneven running
• Battery weakness
• Unusual mechanical noises

A warm engine isn’t proof that anybody is hiding something. Dealers move vehicles around sites and private sellers may genuinely have used the car earlier.

But if a cold start is important to your assessment, ask beforehand.

What I Check Before I Even Agree to Inspect a Car

As an inspector, information before the appointment can be extremely useful.

Before travelling to a vehicle, a buyer should ideally have established as much as reasonably possible about:

• Registration
• Make and model
• Advertised mileage
• Seller type
• MOT history
• Service history
• Vehicle history
• Previous recorded write-off status
• Known faults
• Modifications
• Number of keys
• V5C availability
• Deposit conditions
• Inspection permission
• Vehicle location
• Whether an appropriate road test will be possible

This doesn’t replace inspecting the vehicle.

It helps determine whether inspecting it is worthwhile in the first place.

Don’t Negotiate Against Yourself Before Seeing the Car

Another common mistake is asking:

“What’s your lowest price?”

before you’ve even viewed it.

What are you negotiating against?

You don’t know the condition yet.

Imagine the car is advertised at £12,000.

The seller says they’ll take £11,500.

You arrive feeling like you’ve already negotiated £500 off.

Then you discover it needs four tyres, a service, brake work and has poor body repairs.

That original £500 suddenly means very little.

Inspect first.

Understand the condition.

Then negotiate using evidence.

A defect identified during a professional vehicle inspection gives you something concrete to discuss.

Don’t Be Afraid of Losing the Car

This is probably the most important lesson.

Buyers sometimes behave as though there is only one Volkswagen Golf, BMW 3 Series or Ford Fiesta left in Britain.

There isn’t.

Rare specifications and collectible vehicles are different, but most used cars are replaceable.

Your money is still in your bank account.

Until you’ve completed the purchase, you have a choice.

That gives you negotiating power and, more importantly, protection against making an emotional decision.

If the seller won’t answer reasonable questions, think about why.

If the history doesn’t make sense, investigate.

If you’re being rushed, slow the process down.

If you’re uncomfortable with the deposit terms, don’t pay it.

If an independent inspection isn’t permitted and you’re not comfortable buying without one, don’t convince yourself that you suddenly don’t need it.

My Before-Viewing Used-Car Checklist

Before I spend time travelling to a used car, I want to have done as many of these as reasonably possible:

• Save the original advert
• Research the correct specification
• Check the asking price against comparable cars
• Read the complete MOT history
• Check recorded mileage
• Ask to see service-history evidence
• Establish when major maintenance was completed
• Run an appropriate vehicle history check
• Ask about previous damage and repairs
• Ask about known mechanical faults
• Ask about warning lights
• Confirm the V5C is available
• Ask whether there are two keys
• Check for modifications
• Clarify deposit conditions
• Confirm whether an independent inspection is permitted
• Ask for a cold start where appropriate
• Write down important claims made by the seller
• Be prepared to walk away

This is where CarExamer’s approach to buying used cars is useful: research first, inspect second, decide afterwards.

Not the other way around.

Why a Vehicle Inspection Comes After the Homework

A professional inspection shouldn’t be your first piece of due diligence.

Do the easy research first.

There’s little point paying an inspector to travel to a vehicle only to discover something you could have found yourself in the MOT history or seller’s paperwork before booking.

Once the basic checks make sense, an independent vehicle inspection becomes the next layer.

That’s when you’re trying to establish whether the physical car supports everything you’ve already been told.

The history says one thing.

The seller says another.

The advert makes promises.

The inspection provides physical evidence.

When those stories agree, you’re in a much stronger position to make your own buying decision.

Final Thoughts

Some of the most important used-car checks happen before you ever touch the keys.

Don’t fall in love with photographs.

Don’t tell the seller you’re desperate.

Don’t allow another supposed buyer to dictate your decision.

Don’t transfer a deposit without understanding the terms.

Don’t travel hundreds of miles without checking the MOT and available history.

Don’t accept “full service history” without asking to see it.

And don’t discover after committing money that the seller won’t allow an independent inspection.

Buying a used car is not a race.

The seller has a car they want to sell.

You have money you haven’t spent yet.

Keep that perspective.

Do your research before the viewing, inspect the vehicle properly when you get there, and make the buying decision only after you have enough evidence.

Sometimes the best decision happens before the viewing:

You discover enough information to realise that the car isn’t worth viewing at all.