The Porsche MA1.70 is a 3,397 cc, water‑cooled V6 petrol engine produced between 2013 and 2016. It powered the front-engine Porsche Cayenne and featured a 90‑degree V6 architecture, dual overhead camshafts (DOHC), four valves per cylinder, and direct fuel injection (DFI). In standard form it delivered 220 kW (300 PS) and 400 Nm of torque, with a redline of 6,500 rpm.
Fitted exclusively to the second-generation (92A) Cayenne S Hybrid and select V6 variants, the MA1.70 was engineered for smooth power delivery and seamless integration with Porsche’s hybrid drivetrain. Emissions compliance was achieved through exhaust gas recirculation (EGR), a close-coupled three-way catalytic converter, and particulate filter, satisfying Euro 5 standards under EU Regulation (EC) No 715/2007.
One documented concern is high-pressure fuel pump (HPFP) wear linked to excessive carbon buildup on intake valves, highlighted in Porsche Technical Service Bulletin TSB‑MA1‑2015. Due to direct injection design, fuel does not clean the intake ports, accelerating deposit formation and affecting fuel system longevity.
Production years 2013–2016 meet Euro 5 emissions standards (EU Regulation (EC) No 715/2007; VCA UK Type Approval #VCA/EMS/92A70).
The Porsche MA1.70 is a 3,397 cc water‑cooled V6 petrol engine engineered for the 92A-generation Cayenne (2013–2016). It combines DOHC, 24-valve architecture with direct fuel injection and variable valve timing to deliver smooth, flexible power. Designed to meet Euro 5 emissions standards, it balances performance with modern drivetrain integration and efficiency.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 3,397 cc | |
| Fuel type | Petrol (RON 98 min) | |
| Configuration | V6, DOHC, 24-valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 96.0 mm × 78.0 mm | |
| Power output | 220 kW (300 PS) @ 6,300 rpm | |
| Torque | 400 Nm @ 3,500 rpm | |
| Fuel system | Direct fuel injection (Bosch HDEV5) | |
| Emissions standard | Euro 5 | |
| Compression ratio | 12.0:1 | |
| Cooling system | Water-cooled with dual radiators | |
| Turbocharger | None | |
| Timing system | Chain-driven DOHC with VarioCam Plus | |
| Oil type | Porsche Longlife 0W-40 (C40 specification) | |
| Dry weight | 192 kg |
The MA1.70 delivers smooth, linear power with strong mid-range torque, ideal for SUV applications with hybrid assist. Oil changes every 15,000 km with Porsche C40 0W-40 synthetic oil protect the VarioCam system and timing chains. Because it uses direct injection, carbon buildup on intake valves is common—intake cleaning every 60,000 km is recommended to maintain airflow and prevent misfires. Use RON 98 fuel to prevent knock under load. The high-pressure fuel pump is sensitive to fuel quality and contamination; OEM-spec fuel filters must be replaced at intervals per TSB-MA1-2015.
Oil Specs: Requires Porsche Longlife 0W-40 (C40 spec), ACEA C3-compliant with tighter OEM tolerances (Porsche Lubricants Guide 2014).
Emissions: Full Euro 5 compliance confirmed under EU Regulation (EC) No 715/2007 and VCA Type Approval #VCA/EMS/92A70.
Power Ratings: Measured under DIN 70020 standards. Output consistent across global Cayenne V6 models (Porsche PB-92A-15).
Porsche Technical Information System (TIS): Docs PT-92A-13, FT-92A-14, TSB-MA1-2015
EU Regulation (EC) No 715/2007 on vehicle emissions
VCA Type Approval Database (VCA/EMS/92A70)
DIN 70020 Engine Performance Measurement Standard
The Porsche MA1.70 was used exclusively in Porsche's 92A platform with front-mounted, longitudinal orientation and no external licensing. This engine was integrated into mild-hybrid and conventional V6 layouts—hybrid variants feature additional motor/generator interfaces on the starter ring gear—and all adaptations are documented in OEM technical bulletins.
Engine code MA1.70 is stamped on the left cylinder bank near the exhaust manifold flange (Porsche TIS PT-92A-13). The 10th VIN digit is 'D' (2013), 'E' (2014), 'F' (2015), or 'G' (2016). Visual cues: all MA1.70 engines have black cam covers with “MA1” embossing and a direct-injection fuel rail with Bosch HDEV5 injectors. Do not confuse with MA1.72 (3.6L twin-turbo V6, 420 PS)—the MA1.70 lacks turbochargers and intercoolers. Hybrid variants feature an additional 48V starter-generator belt drive and modified flywheel.
The MA1.70's primary reliability risk is intake valve carbon buildup and high-pressure fuel pump wear, with elevated incidence in urban-driven or short-trip examples. Porsche internal data from 2016 indicated intake cleaning interventions in over 18% of MA1.70 engines by 70,000 km, while UK DVSA records show associated misfire-related MOT failures in poorly maintained vehicles. Fuel quality and driving patterns make maintenance adherence critical.
Analysis derived from Porsche technical bulletins (2013–2016) and UK DVSA failure statistics (2017–2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about PORSCHE MA1-70.
Comprehensive technical documentation and regulatory references
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