SONJA

Sell your Opel Kadett – find out what it's worth

Want to sell a Opel Kadett? Sonja gives you a free, no-obligation price estimate based on your registration number, mileage and market data, EU-inspection history and demand. You get one concrete offer, and we can pick up the car at your home.

Opel logo

Kadett

Tell us about your Opel Kadett— registration number and mileage are all we need.

Safe and non-bindingTakes 2 minutes
Fast, concrete offer
  • Norwegian Public Roads Administration (Statens vegvesen)
  • Gire
  • Vipps
  • Statistics Norway (SSB)
  • OFV

Opel Kadett – key facts

EU-inspection pass rate
38% of 601 inspectionsNorwegian Road Administration
Opel in Norway
over 59,000 registeredSSB

EU inspection stats for Opel Kadett

Based on 601 inspections · 2023–2025 · 37.8 % approved · 2.0 % with dangerous defects · 62.2 % with major defects · avg. 98 000 km at inspection

EU inspection findings tie to repair risk and resale value. We publish open PKK figures so you can see part of how Sonja prices cars. Opel Kadett scores 14% better in vehicle inspections than other cars of the same age. Many buyers check inspection history before purchasing – and a strong record means your car is worth more than average. Sonja factors this into your price estimate automatically, so you get the right price without having to justify it yourself.

By model year

Each row is one model year: approval rate, how often dangerous and major defects appear, and how many inspections sit behind the numbers.

YearPass rateDangerous defectsMajor defectsInspections
1991
7.1%-11.7%
0.0 %-3.1%
92.9 %+11.8%
14
1985
30.0%+2.4%
0.0 %-2.4%
70.0 %-2.2%
10
1984
33.3%+13.2%
8.3 %+5.4%
66.7 %-12.9%
12
1983
18.2%-8.8%
0.0 %-2.1%
81.8 %+8.9%
11
1979
51.3%+27.9%
1.3 %-1.3%
48.7 %-27.6%
78
1978
38.8%+18.4%
0.0 %-2.4%
61.2 %-18.2%
49
1977
40.4%+12.5%
1.9 %-0.4%
59.6 %-12.5%
104
1976
32.3%+8.9%
3.2 %+0.6%
67.7 %-8.6%
62
1975
68.8%+46.0%
3.1 %-0.3%
31.3 %-46.0%
32
1974
34.6%+5.8%
7.7 %+3.9%
65.4 %-5.6%
26

Dangerous defects: failed inspection. Major defects: serious remarks—not the same as dangerous.

By mileage

The same metrics grouped by mileage band—approval, defects and counts per bracket—so you can sanity-check patterns against how far your car has driven.

Km rangePass rateDangerous defectsMajor defectsInspections
< 50,000 km
39.0%-41.2%
1.7 %+1.3%
61.0 %+41.3%
236
50–100k km
37.6%-30.6%
2.0 %+1.1%
62.4 %+30.9%
295
100–150k km
21.4%-31.1%
3.6 %+1.7%
78.6 %+31.3%
28
150–200k km
35.3%-5.0%
0.0 %-2.8%
64.7 %+5.2%
17
200k+ km
48.0%+18.2%
4.0 %+0.1%
52.0 %-18.0%
25

Dangerous defects: failed inspection. Major defects: serious remarks—not the same as dangerous.

Data basis: PKK 2023–2025 · Last updated in Sonja: 29 May 2026, 12:03 · Source: Statens Vegvesen PKK (open files)

Which cars pass EU inspection best – and worst?

Models

Other Opel models

AstraCorsaVivaroComboMokkaInsigniaZafiraCrossland

Places

Popular municipalities to sell your Opel Kadett

OsloBærumAskerLillestrømNordre FolloUllensakerLørenskogEidsvollNes i AkershusNittedalAurskog-HølandVestby

Process

How it works

  1. 1
    Register the car

    Enter your registration number and mileage for your Opel Kadett – we fetch the rest automatically.

  2. 2
    Get a valuation

    You get a fast, concrete offer – often the same day. Free and non-binding.

  3. 3
    We collect and pay

    If you accept, we collect the car and transfer payment quickly.

Ready for a simpler car sale?Register your car in 2 minutes and let us handle everything – from offer to payout.

Safe and non-bindingTakes 2 minutes
Fast, concrete offer
  • Norwegian Public Roads Administration (Statens vegvesen)
  • Gire
  • Vipps
  • Statistics Norway (SSB)
  • OFV

Questions

Frequently asked questions

How many Opel cars are registered in Norway?
According to SSB (2025), 58,877 Opel cars are registered in Norway (2.1% of all passenger cars). Opel is Norway's #15 most-registered car brand. We use market data and inspection history when valuing your Opel.
What is a Opel Kadett worth?
Sonja gives you a free price estimate for a Opel Kadett based on market data, list prices, EU-inspection history and demand. We factor in year, mileage and condition, and give you one concrete offer – fast, safe and easy.
How much does it cost to use Sonja?
Getting an offer from Sonja costs nothing: valuation, follow-up, and collection are free. We do not charge commission—we buy the car directly from you. The offer applies to the specific car you enter in the form.
How quickly will I get an offer?
You'll receive an offer quickly. After you accept, we arrange pickup and payment.
What cars does Sonja buy?
We buy most Opel Kadett cars when they make sense in the market. We assess year, mileage, and condition for the specific car—submit the form for a concrete offer.
What is the difference from a private sale?
A private sale means listing the car, filtering inquiries—often including low offers from dealers—and having strangers visit your home for viewings. With Sonja you get one concrete offer and one agreed pickup.
Should I sell my Opel Kadett privately?
A private sale can make sense if you want to handle listings, viewings, test drives and negotiation yourself. With Sonja you get one concrete offer and an agreed pickup, without the private sales process.
Does Sonja use EU inspection data for the Opel Kadett in its assessment?
Yes. We use historical PKK data (periodic vehicle inspection) for the Opel Kadett as one of several factors in our offer. It gives us a clearer picture of the model's typical technical condition over time.
Is a Opel Kadett with all-wheel drive worth more?
All-wheel drive can affect interest in a used Opel Kadett, especially combined with a tow bar, winter wheels and attractive equipment. The actual value also depends on mileage, condition and market demand.
Can Sonja collect my Opel from my home?
Yes — if you accept the offer, Sonja arranges collection of the car. The goal is a sale that is simple, safe and free of private viewings or negotiation.
What is the difference between a price estimate and a concrete offer?
A price estimate is an initial assessment of what the car may be worth. A concrete offer is the amount Sonja can buy the car for once the car and its details have been assessed.
What do I need to get a price estimate for my Opel Kadett?
You only need your registration number and mileage to start. Sonja pulls the technical details automatically and assesses the car before you receive a concrete offer.