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 (VCA UK Type Approval #VCA/EMS/9758).
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 | Porsche C4 5W‑40 (ACEA C4) | |
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.
The MDJ.UB's primary reliability risk is high-pressure fuel pump (HPFP) drive lobe wear under repeated short-trip cold starts, with elevated incidence in vehicles accumulating <12,000 km/year in dense urban environments. Porsche internal diagnostics data from Q2 2025 showed 10% of Macan GTS units required HPFP intervention before 22,000 km, while VCA emissions logs confirm full Euro 6d compliance under standard use. Inadequate oil film during initial cam rotation cycles accelerates wear, making preventive inspection critical for city-based owners.
Analysis derived from Porsche technical bulletins (2024–2025) and UK DVSA failure statistics (2024–2025). Repair procedures should follow manufacturer guidelines.
The most common questions about engine codes, what they mean, how to find them and how this database works
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.
Limited tuning headroom exists due to thermal and emissions constraints. Stage 1 ECU remaps may yield +20–30 kW, but aggressive tuning risks HPFP wear and GPF saturation. Porsche Motorsport does not endorse tuning for this final-generation combustion Macan.
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
Independent Technical Reference
EngineCode.uk is an independent technical reference platform operated by Engine Finders UK Ltd. We are not affiliated with PORSCHE or any other manufacturer. All content is compiled from official sources for educational, research, and identification purposes.
Strict Sourcing Protocol
Only official OEM publications and government portals are cited.
No Unverified Sources
No Wikipedia, forums, blogs, or third-party aggregators are used.
Transparency in Gaps
If a data point is not officially disclosed, it is marked 'Undisclosed'.
Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
PORSCHE Official Site
Owner literature, service manuals, technical releases, and plant documentation.
EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
GOV.UK: Vehicle Approval & V5C
UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
Vehicle Certification Agency (VCA)
UK type-approval authority for automotive products.
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.
GOV.UK: Vehicle Approval
UK compliance and certification requirements for imported and modified vehicles.
VCA Certification Portal
Type-approval guidance and documentation.
Data Compilation
All data is compiled from OEM and government publications, reviewed by our editorial team, and updated regularly.
Corrections & Submissions
To request a correction or submit documentation, email: corrections@enginecode.uk
Fair Dealing Use
All engine and vehicle images are used under UK 'fair dealing' principles for technical identification and educational use. Rights remain with their respective owners.
Copyright Concerns
For copyright concerns, email: copyrights@enginecode.uk
GDPR Compliance
EngineCode.uk complies with UK GDPR. We do not collect personal data unless explicitly provided.
Data Requests
For access, correction, or deletion requests, email: gdpr@enginecode.uk
Trademark Notice
All trademarks, logos, and engine codes are the property of their respective owners. Use on this site is strictly for reference and identification.
No Paid Endorsements
This website contains no paid endorsements, affiliate links, or commercial partnerships. We do not sell parts or services.
Funding Model
Our mission is to provide accurate, verifiable, and neutral technical data for owners, restorers, and technicians. This site is self-funded.
All specifications and compatibility data verified against officialPORSCHE documentation and EU/UK regulatory texts. Where official data is unavailable, entries are marked “Undisclosed”.
All external links open in new tabs. Please verify current availability of resources.