JTDm 175 Alfa Romeo JTDm 175

Дизельний 5-циліндровий двигун з турбонаддувом, відомий своєю потужністю та економічністю.

Brand: Alfa Romeo Type: Diesel Configuration: Inline-4 Production Years: 2005 - теперішній час Production: Pratola Serra, Italy
48 Brand engines
4 Modifications

Technical Specifications

Engine Displacement 1.9 L (1,900 cc)
Configuration Inline-4
Number of Cylinders 4
Valves per Cylinder 4
Power 170 - 175 л.с.
Torque 350 - 380 Н*м
Cylinder Bore 83.00 mm
Piston Stroke 90.40 mm
Compression Ratio 16.5:1
Firing Order 1-3-4-2
Fuel System Common Rail Direct Injection
Aspiration Turbocharged
Turbocharger Variable Geometry Turbocharger
Intercooler Yes
Maximum RPM 4,000 rpm
Max Torque RPM 1,750 rpm
Valve Train DOHC
Timing Drive Belt
Timing belt replacement interval 120,000 km
Block Material Cast Iron
Head Material Aluminum
Lubrication System Wet sump
Cooling System Liquid cooling

Additional Information

Engine Family JTDm
Manufacturing Plant Pratola Serra, Italy

Maintenance

Engine Oil Capacity 4.5 L (with filter: 4.7 L)
Recommended Viscosity 5W-30
Oil Standard ACEA C2
Recommended Brands Selenia WR, Castrol Edge, Mobil 1
Oil Change Interval 20 000 km or 12 mo
Oil Filter 71754258
Air Filter 71754259
Replace every 60 000 km
Fuel filter 77363649
Cabin Filter 71754260
Spark Plugs
Coolant Capacity 7 L
Coolant Type G12+ (Paraflu UP)
Coolant Change Interval 240 000 km
Thermostat Opening Temperature 88°C
Operating Temperature 90°C
Max Operating Temperature 110°C
Critical Temperature 120°C
Annual Maintenance Cost 700-1000 USD

Reliability

Reliability rating: 7/10

Expected lifespan: 250 000 km

Common problems

Problem Severity Mileage Repair cost
EGR valve clogging Medium 80000-120000 km $300-500
DPF blockage High 100000-150000 km $800-1200

Known defects

  • Turbocharger actuator issues
  • Oil cooler leaks

Warranty extensions

  • Extended warranty for DPF and EGR issues in some regions

Tuning potential

Tuning potential: Medium | Max. safe power: 220 hp

Stage Power Torque Method Cost
Stage 1 200 hp 420 Nm ECU remap only
Reliability impact: Minimal 		$600
Stage 2 220 hp 450 Nm ECU, Downpipe, Intake
Required: Upgraded intercooler, ECU remap
Reliability impact: Low 		$2000

Popular modifications

  • ECU remap
  • Upgraded intercooler
  • Performance air filter

Tuning limitations

  • Stock turbo limitations
  • DPF may need removal for higher power

Cars with the JTDm 175 engine

This engine was fitted to 2 models

Photo Brand Model Generation Production years
No photo
 Alfa Romeo 156 156 1997 - 2007
No photo
 Alfa Romeo 166 166 1998 - 2007

All modifications (4)

Vehicle Generation Modification Power Gearbox Drive
Alfa Romeo 156 156 2.4 JTD 175 л.с. 6-МКП 2WD 175 hp 6-МКП 2WD
Alfa Romeo 156 156 2.4 JTD 175 л.с. 6-Автомат 2WD 175 hp 6-Автомат 2WD
Alfa Romeo 166 166 2.4 JTD 175 л.с. 6-МКП 2WD 175 hp 6-МКП 2WD
Alfa Romeo 166 166 2.4 JTD 175 л.с. 5-Автомат 2WD 175 hp 5-Автомат 2WD

Interesting Facts

  • The JTDm 175 engine was one of the first to feature MultiJet II technology.
  • It offers a good balance between performance and fuel efficiency.

Applications

Vehicle Generation Years Power Markets
Alfa Romeo Giulietta 940 2010-2020 175hp Europe, Australia
Alfa Romeo 159 939 2005-2011 175hp Europe

Compatible transmissions: 6-speed Manual, 6-speed Automatic

Drive types: FWD

Fuel Economy

Fuel Type Diesel
Consumption (City) 7 L/100km
Consumption (Highway) 4.5 L/100km
Consumption (Combined) 5.5 L/100km
Real Consumption 6 L/100km
Fuel Tank Capacity 58 L
Range 1,054 km
Cost per 100 km 8-10 USD

Emissions Standards

Emission Standard Euro 5
CO₂ Emissions 144 g/km
Particulate Filter (DPF) Present
Regeneration every 500 km
AdBlue Not Required

Comparison with competitors

Engine Brand Displacement Power Torque
M47D20 BMW 1,995 cc 177 hp 350 Nm
TDI CR 170 Volkswagen 1,968 cc 170 hp 350 Nm

Pros

  • Good fuel economy
  • Strong mid-range torque
  • Advanced MultiJet II technology

Cons

  • Potential DPF issues
  • Higher maintenance costs compared to some competitors