On sale 11 daysOn sale 11 d
1,240 €
Private seller, Isokyrö, Etelä-Pohjanmaa
1 / 6 Image source: Private seller, Nettiauto
The 2005 Opel Astra Astra GTC Coupe is a front-wheel-drive coupé, petrol-powered with a manual gearbox. It has an engine displacement of 1.8 litres.
The asking price is 1,250 €. That is 950 € (43%) below maksimi.fi's estimated market price of 2,200 €. The estimate is based on 349 comparable cars. The chance this car sells within the next 30 days is about 64%.
The asking price has been reduced by 49 € from the original 1,299 €. A dealer typically sells this model in about 12 days and a private seller in about 7 days. As the asking price is clearly below the market price, this particular car will likely sell faster than average, in an estimated 6 days.
The odometer reads 224,000 km, which works out at about 11,000 km per year. The car was inspected 8/2026, and the next inspection is due an estimated 8/2027.
- Power tailgate
- Leather upholstery
This car has been sold before within maksimi.fi's tracking: it sold on 31/07/2026 for 1,299 €, at 223,000 km. It is now listed for 49 € less than in that sale. It has covered about 1,000 km more since.
Running the car costs an estimated:
- Vehicle tax 247 € per year
- Insurance 470 € per year
- Financing instalment 43 € per month
Vehicle tax and insurance come to about 720 € per year.
The original tyre size is 195/65 R15.
The seller is a private individual, Turku.
The car has been for sale for 14 days since 18/08/2026. The listing has been renewed mid-sale.
Basic information
- Registration number
- SEI-925
- Mileage
- 224,000 km
Verify mileage authenticity 20% off
- Engine
- 1.8 l, Petrol
- Model year
- 2005
- Gearbox
- Manual
- Drivetrain
- Front-wheel drive
- Body type
- Coupé
- Vehicle type
- Passenger car
- Tyre size
- 195/65 R15
- Wheel size
- 15″
- Steering position
- Left-hand
- maksimi.fi ID
- 126099
Technical details
- First registration
- 11/05/2005
- Last inspection
- 8/2026
- Gearbox
- Manual
Equipment
- Leather upholstery
- Power tailgate
Equipment rating
Asking price: 1,250 €
As the asking price is clearly below the market price, this particular car will likely sell faster than average, in an estimated 6 days.
- Private seller · 17/7/2026
- Private seller · 18/8/–5/9/2026
| Date | Price | Change | Listing |
|---|---|---|---|
| 17/07/2026 | 1,299 € | – | Private seller |
| 18/08/2026 | 1,750 € | – | Private seller |
| 20/08/2026 | 1,200 € | −550 € | Private seller |
| 26/08/2026 | 1,750 € | +550 € | Private seller |
| 05/09/2026 | 1,250 € | – | Private seller |
Next inspection due around 8/2027
About 11 months left. A car over 10 years old is inspected every year. According to the listing, the car was inspected in 8/2026.
Check with Traficom
Failures in the same model series
2,062 cars of the Opel ASTRA model series (first registered in 2005) were inspected in 2025. They recorded 2,384 defects leading to a failure, or 115.6 defects per 100 inspections. For cars of the same age nationwide the figure is 93. That is more defects than in cars of the same age on average.
Causes of failures, defects per 100 inspections
- This model series
- All cars
- Brakes 35.2
Service and parking brake, brake dynamometer tests, stability control
- Axles and suspension 33.5
Front and rear axles, springs and dampers, tyres and wheels
- Emissions and leaks 29.2
Exhaust measurement, OBD system, oil, fluid and fuel leaks
The remaining 15.4 % of defects fall under other items. Most advisories concerned lights and electrics (1,329). Median mileage 255,000 km.
Sale periods
Private seller, Raisio, Varsinais-Suomi 13 days
Private seller, Turku, Varsinais-Suomi 14 days for sale
17/7/20264/8/202623/8/202610/9/2026
sale
Grey break: the listing was off the market, with no sale recorded.
Sales
| Sold | Price | Mileage | Time on market | Seller |
|---|---|---|---|---|
| 31/07/2026 | 1,299 € | 223,000 km | 14 days | Private seller, Raisio, Varsinais-Suomi |
Listing changes
| Date | What | Change |
|---|---|---|
| 05/09/2026 | Listing renewed | – |
| 05/09/2026 | Asking price | 1,750 € → 1,250 € |
| 26/08/2026 | Asking price | 1,200 € → 1,750 € |
| 20/08/2026 | Asking price | 1,750 € → 1,200 € |
| 18/08/2026 | Seller changed | Private seller, Raisio, Varsinais-Suomi → Private seller, Turku, Varsinais-Suomi |
| 18/08/2026 | Asking price | 1,299 € → 1,750 € |
| 18/08/2026 | Mileage | 223,000 km → 224,000 km |
See detailed history data from carVertical: the report covers the car's mileage records, possible damage, previous owners and registrations.
View history reportMAKSIMI −20% off the report Service provided by carVertical
carVerticalWhen buying from a dealer, it's worth asking for a finance quote directly from them. Before that, though, get a loan quote from Rahalaitos too: it gives you something to compare the dealer's offer against, and a way to negotiate better terms.
Viewing quotes is free and doesn't commit you to anything. Rahalaitos puts your application out to as many as 25 lenders at once.
€
500 € 70,000 €
3 years
1 year 3 years
Estimated monthly instalment approx. 43 €/mo
See offers Comparison provided by 
The APR under Finnish consumer protection law is 7.48%, calculated for a loan of €7,500 with a repayment period of 9 years, an account fee of €5, an opening fee of €35 and a nominal interest rate of 5.80%. The amount repayable would then be €10,215, i.e. €94/month. A credit card's APR may be 18.97%, calculated for a loan of €1,500 with a repayment period of one year and a nominal interest rate of 17.50%. The amount repayable would then be €1,646 in total, i.e. €146 per month. The final APR, loan term and monthly instalment are set out in the loan agreement. Lenders draw up the loan agreement based on an individual credit assessment. The nominal interest rate offered may vary between 4.19% and 20%, and annual loan costs between €0 and €150. The loan term offered varies between 1 and 20 years. Loan amounts offered range from €500 to €70,000.
Vehicle tax under the tax tables in force in 2026.
- Base tax 247 €/yr
- Driving power tax 0 €/yr
- Total vehicle tax 247 €/yr
Base tax is based on gross weight (approx. 1805 kg).
Estimated annual insurance cost (liability + comprehensive).
Driver's age 45 yrs
- Liability insurance220 €/yr
- Comprehensive250 €/yr
- Total insurance470 €/yr
≈ 39 €/mo
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The final price depends on factors such as claims history and place of residence, and is set in the quote.
Remember to check tyre condition with the seller.
Opel Astra (2005–2007) · H 1.8. 3dr (92kW) 5-hole
Tyre sizes for this car
- 195/65 R15 Original
- 225/35 R19 Recommended
- 225/40 R18 Recommended
- 225/45 R17 Recommended
- 205/55 R16 Recommended
Wheel sizes for this car
15″
16″
17″
18″
19″
Original wheel size: 15″
What do the sizes mean?
Renkaatvaihtoon.fi guarantees that the tyres fit this exact car (SEI-925).
Order tyres See wheels too →Similar cars on sale
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Frequently asked questions about this car
Which car has the registration SEI-925?
SEI-925 is a 2005 Opel Astra Astra GTC Coupe with 224,000 km on the odometer. It is for sale at 1,250 €.
How much does Opel Astra Astra GTC Coupe cost?
Opel Astra Astra GTC Coupe is for sale at 1,250 €.
Is this car well priced?
According to maksimi.fi's price estimate, the asking price is well below market price (estimated market price 2,200 €).
How long has this car been for sale?
The car has been for sale for at least 14 days: the first listing entered maksimi.fi's tracking on 18/08/2026, and the listing has since been renewed.
Has the price been reduced?
Yes. The asking price is 49 € below the original listing price.
Has this car been on the market before?
Yes: this car has one earlier completed sale on record. It was last sold on 31/07/2026 for 1,299 €, and it has been driven about 1,000 km more since then.
What model year is the car?
The car is model year 2005 and was first registered on 11/05/2005.
How many kilometres has the car covered?
The car's mileage is 224,000 km.
When is the car due for its next inspection?
Based on the listing data, the next inspection is due around 8/2027. A car over 10 years old is inspected every year.
How often does this model fail its inspection?
50 % of Opel ASTRA cars first registered in 2005 failed their periodic inspection in 2025 (2,062 inspections, median mileage 255,000 km). Failure rates are not directly comparable between models because typical mileage differs.
How common is a 2005 Opel in Finland?
On 30/06/2026 there were 3,004 Opel passenger cars first used in 2005 in traffic use in Finland. That is 3.3 % of all cars first used that year, making it the 11th most common brand of that year among 34 brands. The most common fuel type among them is petrol (97.3 %). The figure is a snapshot of the whole fleet, not the number of cars for sale.
What causes inspection failures for this model year?
For Opel ASTRA cars first registered in 2005, defects leading to a failure in 2025 inspections came most often from: brakes, axles and suspension, emissions and leaks. That is 115.6 defects per 100 inspections, against 93 for cars of the same age nationwide. Figures count defects, not cars, and describe the model series rather than this individual car.
What fuel type and gearbox does the car have?
The fuel type is petrol and the gearbox is manual.
What features does the car have?
Notable features include Power tailgate, Leather upholstery. The full feature list is on this page.
How much is the car's vehicle tax?
Vehicle tax is 247 € per year. It consists of the base tax, determined by CO₂ emissions or gross weight, and the driving power tax, charged on fuels other than petrol.
What tyre size fits this car?
The car's original tyre size is 195/65 R15.
Where is Opel Astra Astra GTC Coupe located?
The car is located in Varsinais-Suomi (Turku, Varsinais-Suomi).
How much does the car cost to keep per year?
The estimate is 717 € per year: vehicle tax 247 €, insurance 470 €. Insurance and energy are estimates; vehicle tax is calculated from the car's own data.
Who is selling this car?
The seller is Private seller (Turku).
Where can I see this car's price history?
This page shows the changes to the car's asking price, its sale periods and the edits made to the listing.