Opel Signum 2003 2.0-16V Turbo

Opel Signum 2003 2.0 petrol description

Hatchback Opel Signum 2003 2.0-16V Turbo has been produced from June, 2003 to August, 2005. It has four-cylinder petrol engine with displacement of 2.0 litres, which produces power of 175 horsepower on 5500 rpm and torque 265 Nm (Newton metres) on 2500 revolutions per minute.

This 4-cylinder 16-valve engine camshaft is driven by chain (What is an engine chain and belt? ). Engine has fuel injection system and Garrett GT2052S turbine. Engine versions compliant with Euro 4 and Euro 5 emission standards available. Engine lifespan (mileage before major repairs or overhaul) can last from 260 up to 430 thousand kilometres. Remember that engine life depends on regular maintenance and the quality of the materials used (oils, fuels, etc.).
More engine specs 
The engine is identical to Saab B207L engine. It features an aluminum alloy block with cast iron liners and a chain-driven timing system  ...  This Opel Signum 2.0 engine oil type is 5W-30 and oil capacity is 5.7 litres.

Opel Signum 2003 2.0-16V Turbo has front wheel drive (FWD) and manual gearbox with 6 gears.
Opel Signum 2003 2.0-16V Turbo accelerates to speed 100 kilometres per hour in 9.4 seconds. The maximum speed of this car is 220 km/h.

Opel Signum 2003 2.0-16V Turbo fuel consumption is 9.2 litres per 100km in combined city/highway mode (10.9 km/l), city fuel economy - 13.1 l/100km, fuel consumption on highway - 6.9 l/100km. Fuel tank capacity is 60 litres or 15.85 gallons, which gives a mileage up to 640 kilometers without refueling in urban cycle and even up to 860 kilometers on highway.
According to user reviews, the real everyday fuel consumption of this Opel is in line with the figure specified by the manufacturer. 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 2.0 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 2.0-16V Turbo technical data

Model: Opel Signum 2.0-16V Turbo
Body style: Hatchback
Production period: 2003. June ... 2005. August 
Engine: 1998 cm3 Petrol, 4 cylinders CO2 emissions: 221 g/km
Power: 175 HP ON 5500 RPM Torque: 265 NM ON 2500 RPM
Gearbox: Manual gearbox (6 gears) Drive type: Front wheel drive (FWD)
Top speed: 220 km/h Acceleration 0-100 km/h: 9.4 seconds
Fuel consumption (l/100km): 9.2 (combined) 13.1 (urban) 6.9 (highway)
Real fuel consumption: 9.4 l/100km (25 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: 2075 kg

Opel Signum 2003 2.0-16V Turbo engine Z20NET

Engine reliability and common problems:

The engine is identical to Saab B207L engine. It features an aluminum alloy block with cast iron liners and a chain-driven timing system without variable valve timing.It has two balance shafts with a separate chain. The engine is overall reliable. Around 200,000 km, replacing the timing chain and the balance shaft chain often becomes necessary. Replacing two chains, tensioners, gears, and guides involves significant costs. Symptoms like knocking, rattling, and ticking noises, especially during a cold start, indicate potential chain issues. If the timing chain is not replaced in time, metal shavings can appear, leading to bearing damage and clogged oil channels. In severe cases, the stretched chain can skip, bending the valves and requiring an extensive engine overhaul.

The turbocharger is durable overall, but its wastegate valve frequently fails, requiring attention. Another common issue is the short lifespan of the PCV system valve, which often needs replacement.

The crankshaft position sensor is a vulnerable component. Its failure can prevent the engine from starting or cause it to stall while driving. However, replacing the sensor is straightforward.
Overall, this engine can last around 260,000 to 430,000 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 1998 cm3
Number of cylinders 4
Bore (cylinder diameter) 86 mm
Stroke length (piston move) 86 mm
Compression ratio 9.5 : 1
Camshaft drive Timing chain

Chain motors are considered more reliable, chain replacement usually is required less often than a timing belt, but they are often louder and vibrate more.

More service info
Timing chain change interval 200,000 km (recommended)

Sometimes manufacturers do not specify timing chain replacement intervals and design chains for engine life. However, once the recommended change interval has been reached, it is recommended to periodically check the condition of the chain and to change the chain if excessive stretching is detected or if unusual noises from the engine or other symptoms occur.

Fuel system Injection
Opel Signum 2003 2.0-16V Turbo oil type 5W-30
Oil capacity 5.7 litres (6 quarts) More service info
Coolant capacity 7.5 litres (7.9 quarts)
Power 175 HP ON 5500 RPM
Torque 265 NM ON 2500 RPM
Start of production (year) 2003
Duration of production 6 years
Engine also used on Opel Vectra

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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