Mercedes M264/M260 1.5/2.0L Engine Specs, Problems, Reliability

Mercedes M264/M260 1.5/2.0L Engine Specs, Problems, Reliability. The Mercedes-Benz M260 and M264 changed the previous M270/M274 engine series in 2017. The brand-new series consists of a 1.5-liter and 2.0-liter inline four-cylinder gasoline engines with turbocharger and direct fuel injection. Like the M270, the M260 was developed for models with transverse-mounted engines (front-wheel drive automobiles – ex. A-Class A220/A250/A35AMG). And the same as M274, the M264 describes the longitudinal configuration and utilized in rear-wheel-drive models (such as E350, c200/c300, and cls350). The M260/264 series is merged with the M256 3.0 L inline 6-cyl engine.

Mercedes M264 M260 1.5 2.0L Engine Specs

The M264 and M260 are a further development of the previous M270/M274. They likewise have diecast aluminum engine blocks (crankcase) with cast iron cylinder liners. The manufacturer applied the CONICSHAPE technology in the production of the cylinder tires. It suggests that the cylinder bore is expanded at the lower end of the cylinder liners and formed a conical shape, which lessens piston friction and decreases fuel intake.

The old and brand-new engine series share the very same bore and stroke sizes except for the M264 1.5 L engine – it has actually reduced by 2.6 mm cylinder bore size comparing to the previous 1.6-liter version. Like the predecessor, the M260/M264 2.0 L version has a balance shaft situated in the lower section of the crankcase. In addition to that, engineers introduced a brand-new centrifugal damper into the powertrain and plastic engine mounts, making engine operation smoother and more comfortable. New engines got the pistons with cooling ducts and enhanced piston rings.

Mercedes M264/M260 1.5/2.0L Engine Specs, Problems, Reliability

Mercedes M264/M260 1.5/2.0L Engine Specs, Problems, Reliability

On top of M260/264 engines, there is a freshly developed cylinder head made of aluminum-silicon alloy. It includes four valves per cylinder, double overhead camshafts, and Mercedes CAMTRONIC mechanism for the consumption side. The CAMTRONIC is a system that enables two-stage modification of the valve lift. In addition to the variable valve lift, there are 2 hydraulic camshaft adjusters providing variable valve timing for both consumption and exhaust sides. The M260 and M264 utilize a toothed timing chain. The new 1.5 L and 2.0 L four-cylinders likewise have a direct several fuel injection system with latest-generation piezo injection valves but the position of the direct injectors has been optimized.

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The M260 version is geared up with a single-pipe turbocharger, which features an electrical wastegate actuator (the previous M270/274s had vacuum-operated actuators). The M264 engines feature a twin-scroll turbocharger and a digitally controlled wastegate valve too. They likewise have actually enhanced intake manifold with short air paths in the interests of high power output and spontaneous engine response.

The M264 1.5 L and 2.0 L engines are integrated with a 48V electrical system. They are geared up with a belt-driven starter-alternator (BSA) and a 48V electrical water pump by Magna. Due to modifications in the direction of rotation, the starter-generator has a roller belt tensioner from each side. The belt itself is large, seven-groove – and, according to engineers, it does not require replacement during the whole life of the engine. A gas particle filter is included for the M260 and M264 engines as standard.

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Mercedes M264/M260 Engine Problems and Reliability

New engines use tested and trustworthy ideas implemented and evaluated in the previous M270/M274 series. The producer attempted to lay as much toughness as possible in its brand-new base engines. As evidence, they used cast iron sleeves/liners that can be repaired in the future, unlike Nanoslide finishing. For a two-liter turbocharger M264, the thermostat opens at a reasonably low temperature level: 97 degrees Celsius (for the majority of turbo BMW engines – 115 degrees Celsius). Together with an oil pan volume of 6.0 liters, it needs to positively impact on the toughness of the engine and the oil itself.

However it is prematurely to discuss the long-term reliability of the M264 and M260 engines due to a short duration of sales.

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Mercedes M264/M260 1.5/2.0L Engine Specs

Manufacturer Daimler AG
Production years 2017-present
Cylinder block material Cast Iron
Cylinder head material Aluminum
Fuel type Gasoline
Fuel system Direct Injection
Configuration Inline
Number of cylinders 4
Valves per cylinder 4
Valvetrain layout DOHC
Bore, mm 80.4 mm (3.17 in) – 1.5L
83.0 mm (3.27 in) – 2.0L
Stroke, mm 73.7 mm (2.90 in) – 1.5L
92.0 mm (3.62 in) – 2.0L
Displacement, cc 1,497 cc (91.4 cu in)
1,991 cc (121.5 cu in)
Type of internal combustion engine Four-stroke, turbocharged
Compression Ratio 10.5:1
Power, hp 181 hp (135 kW)/5,800-6,100 – M264 E15 DEH LA
194-295 hp (145-220 kW)/5,500-6,100 – M260 DE20 LA, M264 E20 DEH LA
Torque, lb ft 207 lb-ft (280 Nm)/3,000-4,000 – M264 E15 DEH LA
236-295 lb-ft (320-400 Nm)/1,650-4,000 – M260 DE20 LA, M264 E20 DEH LA
Engine weight
Firing order 1-3-4-2
Engine oil weight MB 229.51, SAE 0W-30, 0W-40, 5W-40
Engine oil capacity, liter 5.8l (6.1 qt) – 1.5L engine
6.5-7.0l (6.8-7.4 qt) – 2.0L engine
Oil change interval, mile 9,000 (15,000 km) / 12 months
Applications Mercedes A-Class W177 A220/A250/A35 AMG, Mercedes C-Class W205 C200/C300, Mercedes E-Class E213 E350/E300e, Mercedes GLE-Calss GLE 350, Mercedes CLS-Class C257 CLS350