The Porsche MDJ.UB is a 2,894 cc, twin‑turbocharged inline‑six petrol engine introduced in 2024. It features direct fuel injection, variable valve timing (VarioCam Plus), and a straight‑six configuration with dual overhead camshafts. In the Macan GTS (PA2) it produces 349 kW (475 PS) and 600 Nm of torque, engineered for compact SUV performance with exceptional throttle response.
Fitted exclusively to the all‑new second‑generation all‑electric Macan’s performanc…
All production years (2024–present) meet Euro 6d emissions standards .
The Porsche MDJ.UB is a 2,894 cc twin‑turbocharged inline-six petrol engine engineered for the Macan GTS (PA2) (2024–present). It combines direct injection with twin‑scroll turbochargers to deliver immediate torque response and sustained high‑load performance. Designed to meet Euro 6d standards, it balances compact SUV packaging with track‑capable dynamics.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,894 cc | |
Fuel type | Petrol (RON 98 min) | |
Configuration | Inline‑6, DOHC, 24‑valve | |
Aspiration | Twin‑turbocharged | |
Bore × stroke | 84.0 mm × 87.0 mm | |
Power output | 349 kW (475 PS) @ 6,000–7,000 rpm | |
Torque | 600 Nm @ 2,000–5,000 rpm | |
Fuel system | Bosch HDP7 high-pressure direct injection (350 bar) | |
Emissions standard | Euro 6d | |
Compression ratio | 10.5:1 | |
Cooling system | Water‑cooled with dual electric auxiliary pumps and front‑mounted oil cooler | |
Turbocharger | Twin twin‑scroll turbos (BorgWarner) | |
Timing system | Chain-driven DOHC with hydraulic tensioners | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 202 kg |
The Porsche MDJ.UB was used exclusively in Porsche's PA2 platform with longitudinal front‑mounted orientation and no external licensing. This engine received compact SUV-specific adaptations—reinforced oil pan for off-road durability, compact exhaust manifolds for ground clearance, and updated ECU calibration—and from launch included only the Macan GTS. No cross-manufacturer use exists. All adaptations are documented in OEM technical bulletins.
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Field reports and technical service bulletins highlight component wear patterns under high-load operation. Adherence to manufacturer service intervals and approved fluid specifications is critical for long-term reliability.
Analysis derived from manufacturer technical service bulletins and industry workshop records. Repair procedures should follow manufacturer guidelines.
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The MDJ.UB is robust under typical mixed or spirited driving, but frequent short urban trips increase HPFP and GPF risks. Porsche’s 2025 bulletin recommends HPFP inspection at 25,000 km for city-driven vehicles. With correct oil (C4 5W-40), regular highway driving for GPF health, and timely service, long-term reliability is strong.
Key issues include HPFP cam lobe wear from short-trip cold starts, GPF clogging in urban use, 24V mild-hybrid voltage instability, and timing chain tensioner bleed-down on parked vehicles. All are documented in Porsche TSB‑EN‑127‑2025 and service manuals.
The MDJ.UB is exclusive to the 2024–present Macan GTS (PA2). It is not used in base Macan, Cayenne, Panamera, or 911 models. This engine is not licensed to other manufacturers.
Aftermarket ECU tuning is common on the MDJ-UB platform, but increasing boost or altering engine parameters accelerates component wear, impacts emissions compliance, and may void vehicle warranties. Any modifications should be evaluated carefully by a qualified specialist.
Official combined figure is 10.1 L/100km (~28 mpg UK). Real-world mixed driving yields 12–15 L/100km (19–24 mpg UK). Requires RON 98 minimum; RON 100 recommended for performance driving.
Yes. Like all modern Porsche inline-six engines, the MDJ.UB is an interference design. Timing system failure could result in piston-to-valve contact and catastrophic internal damage.
Porsche specifies 5W-40 synthetic oil meeting Porsche C4 (ACEA C4) standard. Approved examples include Mobil 1 ESP 5W-40 or Porsche-branded equivalent. Change interval is 15,000 km or 12 months.
Comprehensive technical documentation and regulatory references
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UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
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Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
WLTP and RDE testing procedures for emissions certification.
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