4-cylinder engines from Mercedes M166 with a capacity ranging from 1.4 to 2.1 liters were produced from 1997 to 2005 and were only installed in the compact A-Class model and the compact Vaneo, based on it. After the upgrade to the next generation of the A-Class model, these units were given the index M266. R4 series: M102, M111, M260, M264, M266, M270, M271, M274, and M282.
| Exact capacity | 1397 cm³ |
| Power system | injector |
| Engine power | 82 HP |
| Torque | 130 nm |
| Engine block | aluminum R4 |
| Block head | aluminum 8v |
| Cylinder diameter | 80 mm |
| Piston stroke. | 69.5 mm |
| Compression ratio | 11 |
| Engine features | SOHC |
| Hydraulic compensator. | tak |
| Timing drive | chain |
| Timing phase adjuster | there is no |
| Turbocharging | there is no |
| What oils to use | 4.5 liters 5W-40 |
| Fuel type | 95 |
| Environmental class | EURO 3/4 |
| Approximate life expectancy | 230 000 HP |
| Exact capacity | 1598 cm³ |
| Power system | injector |
| Engine power | 82 - 102 HP |
| Torque | 140 - 150 nm |
| Engine block | aluminum R4 |
| Block head | aluminum 8v |
| Cylinder diameter | 80 mm |
| Piston stroke. | 79.5 mm |
| Compression ratio | 11 |
| Engine features | SOHC |
| Hydraulic compensator. | tak |
| Timing drive | chain |
| Timing phase adjuster | there is no |
| Turbocharging | there is no |
| What oils to use | 4.5 liters 5W-40 |
| Fuel type | 95 |
| Environmental class | EURO 3/4 |
| Approximate life expectancy | 240 000 HP |
| Exact capacity | 1898 cm³ |
| Power system | injector |
| Engine power | 125 HP |
| Torque | 180 nm |
| Engine block | aluminum R4 |
| Block head | aluminum 8v |
| Cylinder diameter | 84 mm |
| Piston stroke. | 85.6 mm |
| Compression ratio | 10.8 |
| Engine features | SOHC |
| Hydraulic compensator. | tak |
| Timing drive | chain |
| Timing phase adjuster | there is no |
| Turbocharging | there is no |
| What oils to use | 4.5 liters 5W-40 |
| Fuel type | 95 |
| Environmental class | EURO 3/4 |
| Approximate life expectancy | 250 000 HP |
| Exact capacity | 2084 cm³ |
| Power system | injector |
| Engine power | 140 HP |
| Torque | 205 nm |
| Engine block | aluminum R4 |
| Block head | aluminum 8v |
| Cylinder diameter | 84 mm |
| Piston stroke. | 94 mm |
| Compression ratio | 11 |
| Engine features | SOHC |
| Hydraulic compensator. | tak |
| Timing drive | chain |
| Timing phase adjuster | there is no |
| Turbocharging | there is no |
| What oils to use | 4.5 liters 5W-40 |
| Fuel type | 95 |
| Environmental class | EURO 3/4 |
| Approximate life expectancy | 260 000 HP |
| City | 9.7 litry |
| Route | 5.6 litry |
| Mixed | 7.1 litry |
The weight of the M166 engine according to the catalog is 95 kg. The engine number M166 is located at the junction of the block and the oil pan. In the early years of production, the engine was equipped with an unreliable ECU with a built-in flow meter. Corrosion and rapid wear of camshafts and camshaft journals are also common here. Due to loose VKG pipes, the smell of exhaust gases may be felt in the cabin. The timing chain, generator, water pump, and oil pump have a low lifespan. Due to its unusual design, many operations are performed with the removal of the engine.
| A-Class W168 | 1997 - 2004 |
| Vaneo W414 | 2001 - 2005 |
4-cylinder engines from Mercedes M166 with a capacity ranging from 1.4 to 2.1 liters were produced from 1997 to 2005 and were only installed in the compact A-Class model and the compact Vaneo, based on it. After the upgrade to the next generation of the A-Class model, these units were given the index M266. R4 series: M102, M111, M260, M264, M266, M270, M271, M274, and M282.
4-cylinder Mercedes M266 engines with a displacement ranging from 1.5 to 2.0 liters were produced from 2004 to 2012 and were exclusively installed in the compact A-Class model and its compact van counterpart, the B-Class. These power units were essentially just updated versions of the popular M166 engines. R4 Series: M111, M260, M264, M270, M271, M274, and M282.
4-cylinder engines of Mercedes, with a capacity ranging from 1.6 to 1.8 liters, designated as M271, were produced from 2002 to 2015 and were installed in all the most popular models of their time, such as W203, W204, and W212. Upgraded engines from the M271 family with the EVO index were introduced in 2009. R4 series: M102, M111, M166, M260, M264, M266, M270, M274, and M282.
The V6 engines of the Mercedes M272 series, with a displacement ranging from 2.5 to 3.5 liters, were produced from 2004 to 2017 and installed in the most popular models of the group, such as W204, W211, and W221. There were also specially powerful versions of this engine called Sportmotor. Also belonging to the V6 lineup are the engines: M112 and M276.
The 2.2-liter R4 Diesel engine, known as Jeep ENE or 2.2 CRD, was produced from 2010 to 2015 and installed in European versions of popular models such as Caliber, Patriot, and Compass. This high-performance diesel engine, manufactured by Daimler AG, is also used in Mercedes vehicles and is known as the OM 651 DE 22 LA. The Mercedes series also includes the following engines: - EDJ - ENF - EXL
The 2.4-liter engine Toyota 2AZ-FSE was produced from 2003 to 2009 at a Japanese factory and only installed in the highest version of the popular Avensis sedan with an automatic transmission. The engine was equipped with the company's direct fuel injection system D4 and a phase VVT-i controller on the intake. The AZ family also included engines: 1AZ-FE, 1AZ-FSE, 2AZ-FE, and 2AZ-FXE.