Photo: Rudolf Stricker, CC BY-SA 3.0, via Wikimedia Commons Photo: Rudolf Stricker, CC BY-SA 3.0, via Wikimedia Commons
Verdict
Berline fastback spacieuse (empattement de 2,83 m) dérivée de la Vectra C. Get Car Wise relève une forte corrosion des freins et de la suspension, et CarVerif signale une boîte manuelle M32 fragile après 220 000 km sur le 1.9 CDTI 150. Euro NCAP : note non trouvée.
- Reliability
- 4.0/5
- Price
- Unknown
- Euro NCAP
- Rating not found
Which version to choose
Versions to favour: 1.9 CDTI 150.
1.9 CDTI 150
✓ RecommendedDiesel · Manual · 150 hp · 6.2 L/100 km · Crit'Air 4
Diesel 1 910 cm³ de 150 ch, boîte manuelle M32 à 6 rapports ; 6,2 l/100 km annoncés (fiche L'argus 2004). Get Car Wise le juge le meilleur choix après le restylage de 2005.
1.9 CDTI 150 automatique
Diesel · Automatic · 150 hp · 7.0 L/100 km · 189 g CO₂/km · Crit'Air 4
Même moteur avec boîte automatique ; 7,0 l/100 km et 189 g/km annoncés (fiche L'argus 2005).
Market prices
Price unknown: not enough online listings for a reliable estimate. Compare several listings before negotiating.
Importing this model
Prices abroad
Yearly medians of each country's listings (AutoScout24, in euros; United Kingdom: cinch dealer, in pounds), over years with at least 3 listings. Useful to judge an import (add transport, inspection and registration).
| Country | Range | Median | Gap vs France | Listings |
|---|---|---|---|---|
| Germany | €1,625 – €3,190 (2003 to 2008) | €1,990 | — | 63 |
Median gap shown only when the country's estimate covers the same years as the French one. Add transport, roadworthiness test and registration.
You are importing the car to:
Import penalty (malus) in France
- Emissions of the versions in this guide: 189 g CO₂/km (check the value on the car's registration certificate).
- The CO₂ malus follows the scale of the year the vehicle was first registered, in France or abroad (WLTP or NEDC scale depending on its registration certificate).
- For an imported used car, it is reduced by a flat-rate discount based on its age in months (scheme in force since 1 March 2025). The weight malus also applies on first registration in France.
- Production ended in 2008: a car first registered before 1 January 2015 has no malus.
Source: BOFiP (French tax doctrine), CO₂ and weight malus · CO2 malus and weight malus: imported used car in France
Paperwork and procedures
- Importing a used car from another EU country: the step-by-step process
- Importing a car from an EU country: all the documents to gather
- Carte grise for an imported car: cost, taxes and the official simulator
- CO2 malus and weight malus: imported used car in France
- Importing a used car from outside the European Union: the steps
- Buying a used car in Germany and bringing it back to France
Importing and registering in Belgium: paperwork and procedures
The French malus does not apply: registration taxes, roadworthiness test and documents depend on the country. Our guide details them, with official sources.
Importing and registering in Switzerland: paperwork and procedures
The French malus does not apply: registration taxes, roadworthiness test and documents depend on the country. Our guide details them, with official sources.
Importing a car into Switzerland: customs, tax and registration
Importing and registering in Luxembourg: paperwork and procedures
The French malus does not apply: registration taxes, roadworthiness test and documents depend on the country. Our guide details them, with official sources.
Importing and registering in the United Kingdom: paperwork and procedures
The French malus does not apply: registration taxes, roadworthiness test and documents depend on the country. Our guide details them, with official sources.
Check an imported car's history
HistoVec only covers the vehicle's life in France. For a car coming from abroad, a VIN-based report helps spot inconsistent mileage or a reported accident.
Check the car's history: 20% off → (new tab)Partner link
Known faults
Note: some faults below are cited by a single source only. They are still to be confirmed and the reliability score is only indicative.
Corrosion des flexibles et canalisations de frein
Severity 3/3 · SeriousGet Car Wise (données du contrôle technique britannique) relève 10,6 fois la moyenne pour les raccords de flexibles de frein et 3,3 fois pour les canalisations, dès 60 000 miles. Une canalisation corrodée peut céder sans prévenir et provoquer une perte de freinage.
Single source so far: to be confirmed.
- Versions
- 1.9 CDTI 150, 1.9 CDTI 150 automatique
- Onset
- not documented
- Repair
- not documented
Boîte manuelle M32 fragile
Severity 3/3 · SeriousSelon CarVerif, la boîte M32 6 rapports du 1.9 CDTI 150 casse souvent après 220 000 km (synchroniseurs usés, passage des vitesses difficile). Réparation complète annoncée entre 1 500 et 2 500 € chez un spécialiste.
Single source so far: to be confirmed.
- Versions
- 1.9 CDTI 150
- Onset
- from 220,000 km
- Repair
- €1,500 to €2,500
Usure des liaisons de suspension
Severity 2/3 · CostlyGet Car Wise mesure 5 fois la moyenne pour les articulations et silentblocs de suspension, notamment sur le 1.9 diesel, dès 60 000 miles.
Single source so far: to be confirmed.
- Versions
- 1.9 CDTI 150, 1.9 CDTI 150 automatique
- Onset
- not documented
- Repair
- not documented
Manufacturer recalls
See the official list on RappelConso (new tab) (French government recall site: category “Automobiles et moyens de déplacement”, search “Opel Signum”). A dealer for the brand can also check, using the vehicle identification number (VIN), that recalls have been carried out.
Recalls published in France (RappelConso)
- 15 August 2025 — La structure de l'airbag peut se détériorer. Si les airbags se déploient, cela pourrait entraîner des fragments du gonfleur, blessant les occupants du véhicule. Official notice
- 21 June 2024 — Le propulseur utilisé dans le gonfleur de coussin gonflable du conducteur peut se dégrader lorsqu'il est exposé à des températures et à des niveaux d'humidité très élevés. S'il est activé après un choc, une pression interne excessive peut provoquer l'éclatement du gonfleur et des fragments de métal pourraient traverser le matériau du coussin, causant des blessures aux occupants. Official notice
Inspection checklist
Opel Signum I — inspection checklist
Things to check
- Faire inspecter flexibles, canalisations de frein et trains roulants (corrosion).
- Essayer la boîte manuelle M32 : synchroniseurs, craquements au passage des rapports.
- Contrôler l'électronique et le calculateur moteur (CarVerif signale des pannes récurrentes).
- Vérifier le FAP, la vanne EGR, l'embrayage et le volant moteur.
- Privilégier un exemplaire postérieur à 2005, avec carnet d'entretien complet.
Questions to ask the seller
- Les freins (flexibles et canalisations) ont-ils été remplacés ?
- La boîte de vitesses a-t-elle déjà été réparée ?
- Quand la distribution a-t-elle été changée ?
Test-drive tip: read the fault codes
A warning light that is off proves nothing: a fault may have been cleared just before the viewing. A Bluetooth OBD2 scanner, plugged in under the steering wheel and read on your phone, shows stored codes and whether all emissions readiness tests have run since the last reset.
Electric or hybrid equivalent
No direct electric or hybrid equivalent in our guides. Simulate combustion vs electric cost
Alternatives
Photo: Rudolf Stricker, CC BY-SA 3.0
Opel Vectra
C · 2002–2008
- Price
- €2,000 – €4,000
- Reliability
- 4.5/5
- Fuel types
- Petrol, Diesel
Photo: M 93, CC BY-SA 3.0
Volkswagen Passat
B6 · 2005–2010
- Reliability
- 2.5/5
- Fuel types
- Petrol, Diesel
Photo: Rudolf Stricker, CC BY-SA 3.0
Renault Laguna
II · 2001–2007
- Price
- €2,000 – €3,500
- Reliability
- 2/5
- Fuel types
- Petrol, Diesel
Photo: LSDSL, CC BY-SA 2.0 de
Ford Mondeo
III · 2007–2014
- Price
- €2,300 – €4,945
- Reliability
- 3/5
- Fuel types
- Petrol, Diesel
Before you buy: check and equip
Check the history
Before paying, check the administrative status (lien, objection, declared claims) and the mileage recorded at the roadworthiness test.
Read fault codes
An OBD scanner plugged in under the steering wheel shows stored fault codes, even with warning lights off: useful during the test drive.
Parts and maintenance
Compare prices of parts for the Opel Signum I (timing, brakes, filters) to estimate the repairs to plan for.
Insure the car
Insurance prices vary widely from one model to another: get a quote before signing.
Frequently asked questions
Quel est le coffre de l'Opel Signum ?
455 litres selon les fiches L'argus du 1.9 CDTI 150.
Quel est le point faible du Signum 1.9 CDTI 150 ?
CarVerif cite la boîte manuelle M32, qui casse souvent après 220 000 km ; Get Car Wise insiste sur la corrosion des freins et de la suspension.
Found a listing?
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