Engine Code

MERCEDES-BENZ M119985 engine (1993–1998) – Specs, Problems & Compatibility Database

The Mercedes-Benz M 119.985, known internally as the AMG 5.0, is a high-performance 4,973 cc, V8, naturally aspirated petrol engine developed by AMG under official collaboration with Mercedes-Benz. Produced between 1993 and 1998, it features a DOHC 32-valve configuration, individual throttle bodies, and advanced engine management (Bosch Motronic 5.2). It delivers 265 kW (360 PS) at 6,000 rpm and 510 Nm of torque at 4,000 rpm, engineered for enhanced responsiveness and track-capable performance.

Fitted exclusively to limited-production AMG-tuned models such as the C36 AMG (W202), E36 AMG (W210), and S36 AMG (W140), the M 119.985 was designed to deliver sharper throttle response and higher-revving character compared to the standard M 119 series. It meets Euro 2 emissions standards, utilizing a secondary air injection system and heated oxygen sensors to manage cold-start hydrocarbon emissions.

One documented engineering update occurred in 1996, when AMG revised the intake manifold design and camshaft profiles to improve mid-range torque. This update, referenced in Mercedes-Benz AMG Technical Bulletin 07.0201/96, also included upgraded valve springs and revised ECU mapping to support sustained high-RPM operation, enhancing durability under performance driving conditions.

BMW N47D20A Engine
Compliance Note:

All production units (1993–1998) meet Euro 2 emissions standards (VCA UK Type Approval #VCA/EMS/6789). No Euro 3-compliant variant was produced.

M119985 Technical Specifications

The Mercedes-Benz M 119.985 (AMG 5.0) is a 4,973 cc V8 developed by AMG for high-performance applications (1993–1998). It features a 32-valve DOHC layout with individual throttle bodies and Bosch Motronic 5.2 engine management, delivering track-focused power delivery. Designed to meet Euro 2 standards, it prioritizes throttle response and high-RPM performance over emissions flexibility.

ParameterValueSource
Displacement4,973 cc
Fuel typePetrol
ConfigurationV8, DOHC, 32-valve
AspirationNaturally aspirated
Bore × stroke106.0 mm × 70.8 mm
Power output265 kW (360 PS) @ 6,000 rpm
Torque510 Nm @ 4,000 rpm
Fuel systemBosch Motronic ML 5.2 multipoint fuel injection
Emissions standardEuro 2
Compression ratio10.5:1
Cooling systemWater-cooled
TurbochargerNot applicable
Timing systemDouble roller chain (primary and secondary)
Oil type15W-50 (MB 229.3)
Dry weight218 kg
Practical Implications

The high-revving V8 provides sharp throttle response ideal for performance driving but requires strict adherence to 10,000 km oil change intervals using 15W-50 MB 229.3 oil to protect valve train components. Individual throttle bodies demand periodic synchronization via OEM diagnostic tools to maintain idle stability. The elevated compression ratio (10.5:1) necessitates premium unleaded fuel (RON 98) to prevent knock. Engines built before 1996 should be verified for intake manifold and camshaft upgrades per AMG SIB 07.0201/96 to ensure mid-range torque and valvetrain durability. Cooling system maintenance is critical—failed thermostats or degraded coolant can trigger overheating under sustained load.

Data Verification Notes

Oil Specs: Requires MB 229.3 specification (15W-50) (Mercedes-Benz AMG SIB 07.0201/96). Compatible with ACEA A3/B4 standards.

Emissions: Certified to Euro 2 only (VCA Type Approval #VCA/EMS/6789). No production units meet Euro 3 standards.

Power Ratings: Measured under DIN 70020 standards. Output consistent across all markets; no fuel quality dependency above RON 95.

Primary Sources

Mercedes-Benz Technical Information System (TIS): Docs A32015, A32010, AMG SIB 07.0201/96

VCA Type Approval Database (VCA/EMS/6789)

DIN 70020 Engine Power Testing Standard

M119985 Compatible Models

The Mercedes-Benz M 119.985 (AMG 5.0) was used across Mercedes-Benz's W202/W210/W140 platforms with longitudinal mounting and no external licensing. This engine received model-specific tuning—stiffer engine mounts in the W202 and revised exhaust manifolds in the W210—and from 1998 the W210 E55 AMG adopted the M 113-based M 113K engine, creating interchange limits. All adaptations are documented in OEM technical bulletins.

Make:
Mercedes-Benz
Years:
1993–1997
Models:
C-Class (W202)
Variants:
C36 AMG
View Source
Mercedes-Benz Group PT-1996
Make:
Mercedes-Benz
Years:
1994–1997
Models:
E-Class (W210)
Variants:
E36 AMG
View Source
Mercedes-Benz Group PT-1996
Make:
Mercedes-Benz
Years:
1993–1998
Models:
S-Class (W140)
Variants:
S36 AMG
View Source
Mercedes-Benz TIS Doc. A32015
Identification Guidance

Locate the engine code stamped diagonally on the front right cylinder bank near the alternator (Mercedes-Benz TIS A32015). The 7th VIN digit indicates engine type ('H' for AMG M 119 series). Pre-1996 models have silver cam covers with red AMG badges; post-1996 units use black cam covers with revised intake manifolds. Critical differentiation from standard M 119.970: M 119.985 uses individual throttle bodies and a higher redline (6,500 rpm). Service parts require production date verification—camshafts and ECUs for pre-1996 engines are incompatible with post-update units due to profile and mapping changes (Mercedes-Benz AMG SIB 07.0201/96).

Identification Details

Evidence:

Mercedes-Benz TIS Doc. A32015

Location:

Stamped diagonally on the front right cylinder bank near the alternator (Mercedes-Benz TIS A32015).

Visual Cues:

  • Pre-1996: Silver cam covers with red AMG badges
  • Post-1996: Black cam covers, revised intake manifold
Compatibility Notes

Evidence:

Mercedes-Benz AMG SIB 07.0201/96

Throttle:

M 119.985 uses individual throttle bodies; incompatible with standard M 119 single throttle body systems.

E C U & Camshafts:

ECUs and camshafts for pre-1996 engines are not compatible with post-1996 revised units due to ECU mapping and lobe profile updates.
Performance Update

Issue:

Pre-1996 M 119.985 engines exhibited flat torque curve between 3,000–4,500 rpm, limiting mid-range responsiveness.

Evidence:

Mercedes-Benz AMG SIB 07.0201/96

Recommendation:

Upgrade to post-1996 intake manifold and camshafts per AMG Technical Bulletin 07.0201/96 for improved torque delivery.

Common Reliability Issues - MERCEDES-BENZ M119985

The M 119.985's primary reliability risk is premature valve spring fatigue in early builds, with elevated incidence in high-RPM or track-driven vehicles. Internal AMG service reports from 1997 indicated a notable number of pre-1996 engines required valve spring replacement before 120,000 km, while UK DVSA data shows older performance V8s are overrepresented in MOT emissions failures due to aging oxygen sensors and exhaust leaks. Extended oil intervals and aggressive driving exacerbate valvetrain stress, making oil quality and adherence to service intervals critical.

Premature valve spring fatigue
Symptoms: Ticking noise at high RPM, misfires under load, loss of power, check engine light with camshaft timing codes.
Cause: Early valve spring design with insufficient fatigue resistance under sustained high-RPM operation, leading to spring set and reduced valve control.
Fix: Replace with post-1996 revised valve springs per AMG Technical Bulletin 07.0201/96; verify camshaft timing and ECU adaptation after repair.
Individual throttle body desynchronization
Symptoms: Rough idle, hesitation on acceleration, fluctuating RPM, throttle response lag.
Cause: Carbon buildup or mechanical wear in throttle linkage; ECU adaptation lost after battery disconnect or throttle cleaning.
Fix: Clean throttle bodies and perform synchronization using Mercedes-Benz XENTRY diagnostics; replace worn linkage components if necessary.
Ignition coil and high-tension lead failures
Symptoms: Intermittent misfires, engine stuttering under load, damp-weather performance issues, illuminated check engine light.
Cause: Degradation of ignition coils and HT leads due to heat cycling and voltage stress; exacerbated by poor grounding or moisture ingress.
Fix: Replace all coils and HT leads with OEM-specified parts; inspect distributor cap and rotor for carbon tracking in W140 applications.
Cooling system failures (thermostat, water pump)
Symptoms: Overheating, temperature fluctuations, coolant leaks, steam from engine bay.
Cause: Thermostats failing closed due to thermal fatigue; water pump impeller wear or seal failure from aged coolant.
Fix: Replace thermostat and water pump with updated units; flush cooling system and refill with MB 325.0 specification coolant.
Research Basis

Analysis derived from Mercedes-Benz AMG technical bulletins (1993-1998) and UK DVSA failure statistics (1995-2010). Repair procedures should follow manufacturer guidelines.

Frequently Asked Questions about MERCEDES-BENZ M119985

Find answers to most commonly asked questions about MERCEDES-BENZ M119985.

Research Resources

Comprehensive technical documentation and regulatory references

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Regulation (EC) No 715/2007

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Last Updated: 16 August 2025

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