CARCARETOOL VEHICLE GUIDE

Opel Signum

Opel Signum — 5-door hatchback. Explore engine specifications, fuel economy, dimensions, tire sizes, seating, maintenance and tire-pressure guidance.

About the Opel Signum

Opel Signum is a 5-door hatchback in the mid-size car (d) class. The guide brings together the vehicle information currently available for this model and a Front-engine, front-wheel-drive layout. Public source material describes the model in the context of its design, market positioning and vehicle history.

This guide is designed to answer practical questions about the Opel Signum, including its specifications, engine, fuel economy, tires, maintenance and ownership details.

Opel Signum specifications at a glance

Use this table for the model-level essentials. Exact figures may vary by year, trim, engine and market.

Make	Opel
Model	Signum
Model years	Not specified
Body style	5-door hatchback
Vehicle class	Mid-size car (D)
Manufacturer	Opel (General Motors)
Production	2003–2008
Market / country	ES, FI, LU, NL, NZ, UA

Engine, transmission and performance

The available source data does not identify a single engine configuration for every Opel Signum variant.. The listed drivetrain/layout is Front-engine, front-wheel-drive.

Drivetrain / layout	Front-engine, front-wheel-drive

Dimensions, weight and practicality

Dimensions and capacity figures are presented as published source data when available.

Wheelbase	2830 mm (111 in)
Length	4636 mm (183 in)
Width	1798 mm (70.8 in)
Height	1466 mm (57.7 in)
Kerb / curb weight	1490 –

Opel Signum other specifications

Name	Opel Signum
Image	Opel Signum Facelift 20090717 front.JPG
Aka	Vauxhall Signum

Opel Signum generations and model years

Where a source covers multiple generations, CarCareTool selects the generation(s) that best match this catalog model instead of mixing unrelated variants.

Generation / scope	Years	Engine	Transmission	Drivetrain
Opel Signum	2003–2008	Not specified	Not specified	Front-engine, front-wheel-drive

TIRE PRESSURE

Recommended tire pressure for Opel Signum

Check the vehicle placard or owner’s manual for the manufacturer’s cold inflation pressure. CarCareTool estimates are clearly labelled when an exact verified value is unavailable.

Normal load32 PSI front30 PSI rear

Fully loaded34 PSI front33 PSI rear

Load condition	Front	Rear	Status
Normal	32 PSI	30 PSI	Estimate
Fully loaded	34 PSI	33 PSI	Estimate

Calculate how much air to add

Frequently asked questions about Opel Signum

These FAQs are generated automatically for this specific vehicle from the specifications, features and ownership data available in CarCareTool. Questions are selected by relevance so the page focuses on details that can actually be answered for this model.

What tire pressure should I use for the Opel Signum?

For the correct setting, use the cold inflation pressure on the vehicle placard or in the owner’s manual. When CarCareTool does not have a verified configuration-specific value, its starting estimate is 32 PSI front and 30 PSI rear for normal load. This is an estimate, not an OEM recommendation.

What is the best engine oil for the Opel Signum?

There is no single best engine oil for every Opel Signum configuration. Use the viscosity grade and manufacturer approval specified for the exact engine in the owner’s manual.

What body style is the Opel Signum?

The Opel Signum is classified as a 5-door hatchback.

What are the dimensions of the Opel Signum?

The available source data lists length 4636 mm (183 in), width 1798 mm (70.8 in), height 1466 mm (57.7 in), and wheelbase 2830 mm (111 in).

Is the Opel Signum FWD, RWD or AWD?

The listed drivetrain/layout for the Opel Signum is Front-engine, front-wheel-drive.

Who makes the Opel Signum?

The manufacturer listed for the Opel Signum is Opel (General Motors).

When was the Opel Signum produced?

The available source data describes production as 2003–2008.

How much does the Opel Signum weigh?

The available source data lists a kerb/curb weight of 1490 –. Actual weight can vary with engine, trim and equipment.

Where was the Opel Signum built?

The available source record lists assembly information as Germany: Rüsselsheim.

What class of car is the Opel Signum?

The Opel Signum is listed in the Mid-size car (D) class.

What platform does the Opel Signum use?

The available source data lists the platform/chassis as Epsilon platform.

Which markets or countries sold the Opel Signum?

The CarCareTool catalog currently associates the Opel Signum with ES, FI, LU, NL, NZ, UA. Market availability and specifications can differ.

What came after the Opel Signum?

The available vehicle data lists Opel Insignia Sports Tourer as a successor where applicable.

What replaced the Opel Signum?

The available vehicle data lists Opel Insignia Sports Tourer as the successor where applicable.

What cars are related to the Opel Signum?

The available source data identifies related models as Fiat CromaChevrolet MalibuOpel VectraSaturn AuraSaab 9-3. Relationships can vary by market and generation.

How often should I check the tire pressure on the Opel Signum?

Check the tires regularly and before long trips, with the tires cold. Use the vehicle placard or owner’s manual as the source of the manufacturer’s recommended pressure.

Should I use the tire sidewall pressure for the Opel Signum?

No. The maximum pressure printed on the tire sidewall is not automatically the vehicle’s recommended setting. Use the vehicle placard or owner’s manual for the correct cold inflation pressure.

Does the recommended tire pressure change when the Opel Signum is fully loaded?

It can. Many vehicles specify a different cold pressure for heavier loads. Check the vehicle placard or owner’s manual for the exact loading condition.

Can the Opel Signum have different tire pressures front and rear?

Yes. Some vehicles specify different front and rear pressures because axle loads and vehicle configurations differ. Follow the exact vehicle recommendation where available.

Why can mileage differ from the published figure for the Opel Signum?

Published fuel economy is measured under a defined test method. Real-world mileage can vary with traffic, speed, temperature, tire pressure, payload, maintenance and driving style.

Data sources and verification are available in the page editor; exact specifications can vary by year, market, trim and engine.

Opel Signum images

Vehicle images are shown from the stored source image records when available.