Opel Signum 2003 1.8-16V

Opel Signum 2003 1.8 petrol description

Hatchback Opel Signum 2003 1.8-16V has been produced from June, 2003 to August, 2004. It has four-cylinder petrol engine with displacement of 1.8 litres, which produces power of 125 horsepower on 6000 rpm and torque 170 Nm (Newton metres) on 3800 revolutions per minute.

This 4-cylinder 16-valve engine camshaft is driven by belt (What is an engine chain and belt? ). Engine has fuel injection system, it has no turbine. The engine meets the Euro 4 emissions standard. Approximate engine life expectancy (mileage until serious repairs are required) for this engine is between 270 000 and 450 000 kilometres. Remember that engine life depends on regular maintenance and the quality of the materials used (oils, fuels, etc.).
More engine specs 
Mechanically reliable engine, but the engine control unit can cause problems. This Opel Signum 1.8 engine oil type is 5W-30 and oil capacity is 4.25 litres.

Opel Signum 2003 1.8-16V has front wheel drive (FWD) and manual gearbox with 5 gears.
Opel Signum 2003 1.8-16V accelerates to speed 100 kilometres per hour in 12.2 seconds. The maximum speed of this car is 197 km/h.

In combined cycle (city and motorway), the Opel Signum 2003 1.8-16V fuel consumption is 7.9 litres per 100km (12.7 km/l), fuel consumption in city - 11 l/100km, highway fuel economy - 6.1 l/100km. Fuel tank capacity is 60 litres or 15.85 gallons, which gives a mileage up to 740 kilometers without refueling in urban cycle and even up to 980 kilometers on highway.
According to user reviews, the real everyday fuel consumption of this Opel is in line with, and sometimes even lower than, the manufacturer's stated combined consumption. More - Real Opel Signum fuel consumption.

Opel Signum safety

During safety testing Opel Signum has obtained 4 stars from five, which means good safety level.
Adults (driver and passenger) safety of Opel Signum is evaluated with four stars, and for pedestrian protection Opel Signum got one star.

Opel Signum 1.8 service information and maintenance intervals Oil change intervals, capacities and specifications, service information for filters, spark plugs, belts etc.
Opel Signum 2003

Opel Signum 2003 1.8-16V technical data

Model: Opel Signum 1.8-16V
Body style: Hatchback
Production period: 2003. June ... 2004. August 
Engine: 1796 cm3 Petrol, 4 cylinders CO2 emissions: 189 g/km
Power: 125 HP ON 6000 RPM Torque: 170 NM ON 3800 RPM
Gearbox: Manual gearbox (5 gears) Drive type: Front wheel drive (FWD)
Top speed: 197 km/h Acceleration 0-100 km/h: 12.2 seconds
Fuel consumption (l/100km): 7.9 (combined) 11.0 (urban) 6.1 (highway)
Real fuel consumption: 8.4 l/100km (28 MPG) by user reviews from various sources
Fuel tank capacity: 60 litres (15.9 gallons)
Car dimensions: 4.64m (length) 1.80m (width) 1.47m (height)
Turning diameter: 11.2 meters
Seats: 5 seats
Trunk capacity: 365 litres
Trunk max capacity: 1410 litres (with rear seats folded down)
Gross weight: 1995 kg

Opel Signum 2003 1.8-16V engine Z18XE

Engine reliability and common problems:

Mechanically reliable engine, but the engine control unit can cause problems.
Overall, this engine can last around 270,000 to 450,000 km if properly maintained, using the correct quality oil and fuel, and carrying out regular checks and maintenance.
The engine has hydraulic valve tappets (lifters), which provide quieter operation and do not require periodic adjustment, but are more complex in design and can cause serious engine damage in the event of failure.
Engine displacement 1796 cm3
Number of cylinders 4
Bore (cylinder diameter) 80.5 mm
Stroke length (piston move) 88.2 mm
Compression ratio 10.5 : 1
Camshaft drive Timing belt

Timing belt engines are generally quieter and less vibrating than chain engines, but belt usually needs to be replaced more often and the risk of breakage is higher.

More service info
Timing belt change interval 60,000 km
Fuel system Injection
Opel Signum 2003 1.8-16V oil type 5W-30
Oil capacity 4.25 litres (4.5 quarts) More service info
Coolant capacity 5.5 litres (5.8 quarts)
Power 125 HP ON 6000 RPM
Torque 170 NM ON 3800 RPM
Start of production (year) 2000
Duration of production 9 years
Engine also used on Opel Astra Opel Zafira Opel Vectra Opel Meriva

Generally, the use of an engine in several models and its long production run is an indication of the quality of the engine and the success of its design.

All Opel Signum hatchback [2003 - 2005] modifications

Modification Engine Power Consumption Gearbox
Opel Signum 2004 1.8-16V Jan 2004 — Aug 2004 1.8 Petrol 122 HP - Automatic
Opel Signum 2003 1.8-16V Jun 2003 — Aug 2004

Most fuel efficient petrol version

1.8 Petrol 125 HP 7.9 l/100km Manual (5)
Opel Signum 2004 1.9 CDTi Aug 2004 — Aug 2005 1.9 Diesel 120 HP 6.0 l/100km Manual (6)
Opel Signum 2004 1.9 CDTi Apr 2004 — Aug 2005 1.9 Diesel 150 HP 6.1 l/100km Manual (6)
Opel Signum 2004 1.9 CDTi Aug 2004 — Aug 2005 1.9 Diesel 150 HP 7.2 l/100km Automatic (6)
Opel Signum 2003 2.0-16V Turbo Jun 2003 — Aug 2005 2.0 Petrol 175 HP 9.2 l/100km Manual (6)
Opel Signum 2003 2.0 DTI ECOTEC Jan 2003 — Dec 2004

Most fuel efficient diesel version

2.0 Diesel 101 HP 5.9 l/100km Manual (5)
Opel Signum 2003 2.2-16V DGi Jun 2003 — Aug 2005 2.2 Petrol 155 HP 8.1 l/100km Manual (5)
Opel Signum 2003 2.2-16V DGi Jun 2003 — Aug 2005 2.2 Petrol 155 HP 9.1 l/100km Automatic (5)
Opel Signum 2003 2.2 DTi-16V Jun 2003 — Aug 2004

Most fuel efficient diesel version by real consumption

2.2 Diesel 125 HP 6.3 l/100km Manual (5)
Opel Signum 2003 2.2 DTi-16V Jun 2003 — Aug 2004 2.2 Diesel 125 HP 7.6 l/100km Automatic (5)
Opel Signum 2003 3.0-V6 CDTI Jun 2003 — Aug 2005

Most powerfull diesel version (177 HP)

3.0 Diesel 177 HP 7.4 l/100km Manual (6)
Opel Signum 2003 3.0-V6 CDTI Jun 2003 — Aug 2005

Most powerfull diesel version (177 HP)

3.0 Diesel 177 HP 7.9 l/100km Automatic (5)
Opel Signum 2003 3.2-V6 Cosmo Jun 2003 — Aug 2005

Most dynamic version - 100 km/h in 7.9 seconds

3.2 Petrol 211 HP 10.1 l/100km Manual (5)
Opel Signum 2003 3.2-V6 Cosmo Jun 2003 — Aug 2005

Most powerfull petrol version (211 HP)

3.2 Petrol 211 HP 10.7 l/100km Automatic (5)
Opel Signum 2003 reviews
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