2.0-liter engine AR32301 or Alfa Romeo 156 2.0 TS was produced from 1998 to 2001 and was installed in many popular models such as 145, 146, 156, GTV, and Spider. This engine, after modernization according to Euro 3 emission standards, became a power unit designated as AR32310. The Twin Spark line includes: AR32104, AR32201, and AR32310.
| Exact capacity | 1970 cm³ |
| Power system | distributed injection |
| Engine power | 155 HP |
| Torque | 187 nm |
| Engine block | cast iron R4 |
| Block head | aluminum 16v |
| Cylinder diameter | 83 mm |
| Piston stroke. | 91 mm |
| Compression ratio | 10 |
| Engine features | DOHC, VLIM |
| Hydraulic compensator. | tak |
| Timing drive | belt |
| Timing phase adjuster | at the inlet VVT |
| Turbocharging | there is no |
| What oils to use | 4.4 liters 10W-40 |
| Fuel type | 92 |
| Environmental class | EURO 2 |
| Approximate life expectancy | 210 000 HP |
| City | 11.7 litry |
| Route | 6.7 litry |
| Mixed | 8.5 litry |
The weight of the AR32301 engine according to the catalog is 170 kg. The engine number AR32301 is located at the junction of the block and the gearbox. The main problem of the engine is the wear of the cylinder walls and subsequent oil consumption. Also, the cam lobes wear out due to the sticking of the hydraulic compensators. Sensors often fail in the engine, especially the EGR valve and crankshaft position sensor. The balance belt doesn't last long, and if it breaks, it can get caught in the timing belt. Weak points here include the phase regulator, oil pump, and VLIM system in the intake.
| 145 (Type 930) | 1998 - 2001 |
| 146 (Type 930) | 1998 - 2001 |
| 156 (Type 932) | 1997 - 2000 |
| GTV II (Type 916) | 1998 - 2000 |
| Spider V (Type 916) | 1998 - 2000 |
1.4-liter engine Fiat 198A4000 or 1.4 T-Jet was installed by the company from 2007 to 2020 and used in models of the Italian concern, such as Bravo, Linea, Doblo, and Grande Punto. This turbocharged engine is also often found under the hood of Lancia Delta, Alfa Romeo MiTo, and Giulietta. The FIRE-T series also includes: 198A1000.
2.2-liter engine 939A5000 or Alfa Romeo 159 2.2 JTS was produced from 2005 to 2010 and installed in many well-known models of the group, such as 159, Brera, and the similar Spider. This engine is actually a modification of the Opel power unit Z22YH with phasing regulators. The JTS engine series includes: 937A1000 and 939A000.
The 0.9-liter twin-cylinder engine Fiat 312A2000 or 0.9 TwinAir has been used since 2010 and installed in popular models of the Italian company, such as 500C, Panda, and Punto. This drivetrain can also be found under the hood of Lancia Ypsilon and Alfa Romeo MiTo cars. The TwinAir lineup also includes the 199B6000.
1.6-liter engine AR32104 or Alfa Romeo 156 1.6 TS was produced from 2000 to 2010 and installed in two of the group's most popular models at that time, with the indexes 147 and 156. This engine did not have the Variable Length Intake Manifold (VLIM) system, which is used in larger engines in the series. The Twin Spark line includes: AR32201, AR32301, and AR32310.
The 1.6-liter diesel engine Fiat 198A3000 or 1.6 Multijet was produced from 2008 to 2018 and installed in popular models such as Bravo, Linea, and the utility version of Doblo. This engine was also used in the similar Opel Combo D model with the index A16FDH or 1.6 CDTI.
2.0 liter engine Mercedes OM640 or A-Class 2.0 CDI was produced from 2004 to 2012 and was only mounted in the second generation of A-Class and similar compact van class B. This propulsion system essentially replaced the popular diesel engine OM668 with a capacity of 1.7 liters. The R4 series includes: OM615 OM601 OM604 OM611 OM646 OM651 OM654