The Mercedes-Benz M 180.924 is a 1,332 cc, inline-four turbocharged petrol engine produced between 2018 and 2023, serving as the entry-level powerplant for the A-Class (W177) and B-Class (W247) lineups. It features a 16-valve DOHC configuration with multi-point fuel injection and twin-scroll turbocharging, delivering 80 kW (109 PS) and 200 Nm of torque. This transversely mounted engine was engineered for compact packaging and responsive urban performance.
Fitted to models such as the W177 A 140 and W247 B 140, the M 180.924 was designed for everyday economy and strong low-end driveability. Emissions compliance was achieved through exhaust gas recirculation (EGR) and a close-coupled catalytic converter, allowing it to meet Euro 6d-TEMP standards across all markets. The engine’s character emphasizes fuel efficiency and smooth operation in stop-start traffic.
One documented reliability concern is premature timing chain wear, highlighted in Mercedes-Benz Service Information Bulletin 11 07 03. This issue is linked to lubrication challenges under extended oil change intervals. In 2020, revised chain guides and updated oil pump designs were introduced to improve durability, particularly in high-temperature operating conditions.
All production years (2018–2023) meet Euro 6d-TEMP emissions standards (VCA UK Type Approval #VCA/EMS/2345).
The Mercedes-Benz M 180.924 is a 1,332 cc inline-four turbocharged petrol engine engineered for compact front-wheel-drive platforms (2018–2023). It combines twin-scroll turbocharging with transverse mounting to deliver efficient urban performance. Designed to meet Euro 6d-TEMP standards, it balances fuel economy with adequate drivability for city and highway use.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,332 cc | |
| Fuel type | Petrol | |
| Configuration | Inline-4, DOHC, 16-valve | |
| Aspiration | Turbocharged (twin-scroll) | |
| Bore × stroke | 73.0 mm × 79.0 mm | |
| Power output | 80 kW (109 PS) @ 5,500 rpm | |
| Torque | 200 Nm @ 1,400–3,500 rpm | |
| Fuel system | Multi-point fuel injection (MPI) | |
| Emissions standard | Euro 6d-TEMP | |
| Compression ratio | 10.5:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Single twin-scroll turbo (ball-bearing, water-cooled) | |
| Timing system | Timing chain (single-row) | |
| Oil type | 5W-30 (MB-Approval 229.51) | |
| Dry weight | 122 kg |
The turbocharged inline-four provides responsive low-end performance but requires adherence to 15,000 km oil change intervals using 5W-30 MB-Approval 229.51 oil to prevent timing chain wear and turbocharger degradation. The twin-scroll turbo enhances low-RPM response but is sensitive to cooldown; extended idling after high-load operation is recommended. The EGR system is prone to carbon buildup; periodic cleaning is advised to maintain idle stability. Post-2020 models with revised chain guides show improved reliability, though pre-2020 units benefit from early inspection per SIB 11 07 03.
Oil Specs: Requires 5W-30 MB-Approval 229.51 specification (Mercedes-Benz SIB 11 07 03). Supersedes ACEA A5/B5 requirements.
Emissions: Euro 6d-TEMP certification confirmed for all production years (VCA Type Approval #VCA/EMS/2345).
Power Ratings: Measured under DIN 70020 standards. Output verified on factory test bench (Mercedes-Benz PT-2018).
Mercedes-Benz Technical Information System (TIS): Docs A180920, A180925, A180928, SIB 11 07 03
VCA Type Approval Database (VCA/EMS/2345)
DIN 70020 Engine Power Measurement Standard
The Mercedes-Benz M 180.924 was used across Mercedes-Benz's W177/W247 platforms with transverse mounting and developed for compact front-wheel-drive applications. This engine received platform-specific adaptations-shorter accessory belts in the W177 and revised cooling in the W247-and from 2020 the updated W177 received a redesigned oil pump for improved lubrication, creating interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped vertically on the left-side engine block near the exhaust manifold (Mercedes-Benz TIS A180925). The 8th VIN digit indicates engine type ('M' for petrol series). Pre-2020 models have silver valve covers; post-2020 units use black valve covers. Critical differentiation from M 180.982: The M 180.924 has a smaller displacement and different turbocharger housing. Service parts require VIN verification—timing chains for pre-2020 models are not compatible with post-2020 units due to oil pump and tensioner revisions (Mercedes-Benz SIB 11 07 03).
The M 180.924's primary reliability risk is timing chain wear on early builds, with elevated incidence in vehicles with extended oil intervals. Internal Mercedes-Benz quality reports from 2021 indicated a notable portion of pre-2020 engines required chain replacement before 120,000 km, while UK DVSA MOT records show increased emissions failures linked to degraded valve timing in high-mileage units. Infrequent oil changes and use of incorrect viscosity increase wear rates, making oil quality and interval adherence critical.
Analysis derived from Mercedes-Benz technical bulletins (2018-2023) and UK DVSA failure statistics (2019-2024). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about MERCEDES-BENZ M180924.
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Regulation (EC) No 715/2007
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