Mistakes when buying a used car can cost thousands of euros. The good news — most of them are easily avoidable. Here are the 10 most common errors and exactly how to avoid them.
Mistake #1: Skipping the VIN History Check
The Problem
"The seller said everything was fine" — and you believed them.
The Consequences
- Hidden odometer rollback (invisible to the naked eye)
- Concealed accident damage
- Stolen vehicle
- Outstanding finance (liens on the car)
How to Avoid It
ALWAYS run a VIN check BEFORE meeting the seller.
- carVertical: 15–25 €
- AutoDNA: 10–20 €
- HPI Check (UK): 15–20 €
The maths: A VIN check costs 20 €. Missing this mistake can cost 5,000 €.
Mistake #2: Focusing Only on Price
The Problem
"I found the cheapest one!" — but cheapest isn't always best.
The Consequences
- Hidden problems revealed after purchase
- Expensive repairs needed immediately
- Higher running costs
- Rapid depreciation
How to Avoid It
Calculate the TOTAL cost:
True cost = Purchase price + Repairs + Annual running costs × Years
Example:
- Cheap car: 8,000 € + 2,000 € repairs = 10,000 €
- Better car: 10,000 € + 0 € repairs = 10,000 €
Paying a fair price for a clean car is always better than a cheap price for a problem car.
Mistake #3: Not Taking a Test Drive
The Problem
"It looks fine, I'll take it" — without ever driving it.
The Consequences
- Undetected mechanical defects
- Uncomfortable driving position
- Noises and vibration only felt while driving
- Gearbox problems
How to Avoid It
ALWAYS drive for at least 20–30 minutes:
- City driving (stops, starts, low-speed manoeuvres)
- Motorway speeds (70–120 km/h)
- Rough road (to test the suspension)
If the seller won't let you test drive — walk away immediately.
Mistake #4: Rushing the Decision
The Problem
"The seller said another buyer is coming in an hour..."
The Consequences
- Impulse purchase under pressure
- Missed problems and red flags
- Overpaying
- Regret
How to Avoid It
Never rush!
- If the seller is pressuring you — that is itself a red flag
- Good cars don't disappear within hours
- Better to miss a "good deal" than to buy someone else's problem
Useful phrase: "I need to think about it. If you sell it to someone else, it wasn't the right car for me."
Mistake #5: Not Calculating Running Costs
The Problem
"I can afford a BMW!" — but can you afford to keep it running?
The Consequences
- Unaffordable running costs
- Skipped servicing
- Car deteriorates faster
- Forced to sell at a loss
How to Avoid It
Before buying, calculate monthly ownership costs:
| Cost | Economy car | Premium car |
|---|---|---|
| Fuel/month | 150 € | 250 € |
| Insurance/month | 30 € | 60 € |
| Servicing/month | 50 € | 100 € |
| Total | 230 € | 410 € |
Rule of thumb: Total car costs shouldn't exceed 15% of your monthly income.
Mistake #6: Buying Emotionally
The Problem
"I HAVE to have THIS specific car!" — even when it doesn't make sense.
The Consequences
- Overpaying
- Wrong car for your actual needs
- Daily inconvenience
- Boredom with it quickly
How to Avoid It
Write a requirements list BEFORE you start searching:
- Maximum budget (hard limit)
- Must-have criteria (size, fuel type, gearbox)
- Nice-to-have criteria
- Deal-breakers
Stick to the list! If the car doesn't meet your must-haves — it's not for you.
Mistake #7: Not Negotiating
The Problem
"Whatever they're asking, I'll pay" — without any negotiation.
The Consequences
- Paying 5–15% too much
- Seller expected negotiation
- Losing 500–2,000 €
How to Avoid It
ALWAYS negotiate!
Tactics:
- Start 10–15% below the asking price
- List any issues you've found as justification
- Silence after making your offer (let them respond)
- "I have X €, that's my budget"
Realistic results: A 5–10% discount is completely normal.
Mistake #8: Not Checking Documents Properly
The Problem
"The paperwork's fine" — but you never actually looked at it.
The Consequences
- VIN mismatch between car and documents
- Invalid MOT/technical inspection
- Problems registering the car
- Stolen vehicle
How to Avoid It
Verify:
- VIN matches between documents and the car itself
- Registered owner matches the seller
- Technical inspection (MOT/TÜV) is valid
- Service history is plausible and consistent
Mistake #9: Ignoring Red Flags
The Problem
"It's a bit odd, but probably nothing..." — and you ignore the warning signs.
The Consequences
- Serious hidden problems
- Fraud
- Losing your money
The Red Flags
Walk away immediately if:
- Seller is pressuring you to decide now
- Won't allow a test drive
- Price is suspiciously below market
- Document inconsistencies
- Refuses to meet in a public place or at a garage
- Demands a deposit before viewing
- The "story" changes during the conversation
- Can't explain why the mileage seems low for the age
Mistake #10: Ignoring Resale Value
The Problem
"I like it, I'll take it" — without thinking about the future.
The Consequences
- Car depreciates rapidly
- Hard to sell when you want to
- Significant financial loss
How to Avoid It
Before buying, ask:
- Is this make/model easy to sell in this market?
- What's the demand for this model used?
- How much are similar cars listed for right now?
Best resale value (Baltic market):
- Toyota (especially hybrids)
- Lexus
- Mazda
- Škoda
Worst resale value:
- French brands
- Unusual/niche models
- Unusual colours or spec combinations
Complete Pre-Purchase Checklist
Before you start searching:
- Set a firm maximum budget
- List your must-have criteria
- Calculate monthly running costs you can afford
Before viewing:
- Run a VIN history check
- Research known issues for that model
- Check market prices for comparable examples
At the viewing:
- Check all documents match the car
- Do a visual inspection (rust, paint, panel gaps)
- Take a full test drive
Before agreeing to buy:
- Negotiate the price
- Don't give in to pressure tactics
- Think about the long-term and resale
FAQ
What's the single most common mistake?
Not running a VIN history check. It's the cheapest and easiest protection available, but most buyers skip it.
Should you always negotiate?
Yes — always try. Even if the price looks fair. The worst they can say is no.
How do I know if the price is right?
Check 10–15 similar listings. If this car is more than 15% below the average — something is wrong.
Should I bring a mechanic?
For cars over 10,000 € or if you're uncertain — yes, absolutely. 50–100 € for an independent inspection can save thousands.
Want expert help buying a used car without the stress? WHEELSTREET handles sourcing, inspection and verification so you don't make these mistakes. Contact us for a free consultation.
You might also find useful:
- 🔍 Car sourcing service — we avoid these mistakes for you
- 🏆 How to check a used car in 15 minutes
- 🚗 Used cars at WHEELSTREET — verified, inspected cars
- ⚠️ How to avoid used car scams
- 📚 VIN check glossary
