The Jaguar 508PS is a 5,000 cc, supercharged V8, petrol engine produced between 2014 and 2020. It features a 90° V8 configuration, quad-camshaft (DOHC) layout, and Roots-type supercharger with chargecooler, delivering 375 kW (508 PS) and 625 Nm of torque. This engine is part of Jaguar's AJ-V8 Gen III family, designed for high-performance grand touring with immediate throttle response and strong mid-range pull.
Fitted to the F-TYPE R, XKR-S, and high-performance XJ models, the 508PS was engineered for dynamic driving and rapid acceleration. Emissions compliance was achieved through dual three-way catalytic converters, sequential multi-point fuel injection, and integrated engine management, allowing it to meet Euro 6b standards across its production run.
One documented technical concern is degradation of the supercharger bypass valve actuator, highlighted in Jaguar Technical Service Bulletin JAG-TS-2718. This issue, primarily affecting high-mileage engines, can lead to boost control faults and inconsistent supercharger engagement. From 2017, Jaguar introduced a revised actuator design with improved sealing and durability, reducing field failure rates.
Jaguar
Production years 2014–2020 meet Euro 6b emissions standards (EU Regulation (EC) No 715/2007, VCA UK Type Approval #VCA/JAG/508PS/2014).
The Jaguar 508PS is a 5,000 cc supercharged V8 petrol engine engineered for high-performance applications (2014–2020). It combines a Roots-type supercharger with chargecooler and DOHC architecture to deliver strong forced-induction power and responsive driving dynamics. Designed to meet Euro 6b standards, it balances performance with emissions compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 5,000 cc | |
| Fuel type | Petrol | |
| Configuration | V8, DOHC, 32-valve | |
| Aspiration | Supercharged | |
| Bore × stroke | 90.0 mm × 96.0 mm | |
| Power output | 375 kW (508 PS) @ 6,500 rpm | |
| Torque | 625 Nm @ 3,500–5,000 rpm | |
| Fuel system | Sequential multi-point fuel injection (Siemens SIMOS 20.4) | |
| Emissions standard | Euro 6b | |
| Compression ratio | 9.5:1 | |
| Cooling system | Water-cooled | |
| Supercharger | Eaton M62 Roots-type with chargecooler | |
| Timing system | Double roller chain, duplex primary with simplex secondary | |
| Oil type | SAE 5W-30 C3 (Jaguar Specification TXW-50-001) | |
| Dry weight | 238 kg |
The supercharged design provides immediate throttle response ideal for spirited driving but requires regular high-RPM operation to maintain combustion chamber cleanliness. SAE 5W-30 C3 oil meeting Jaguar TXW-50-001 is critical for chain and bearing lubrication. Extended oil change intervals increase risk of cam sprocket wear due to degraded oil film strength. The Siemens SIMOS 20.4 engine management system demands stable battery voltage; low voltage can disrupt fuel injection timing. Post-2017 models feature improved supercharger bypass valve actuator durability, reducing boost-related faults. Catalytic converters are sensitive to leaded fuel and misfire events, necessitating prompt diagnosis of ignition faults.
Oil Specs: Requires SAE 5W-30 C3 meeting Jaguar TXW-50-001 (Jaguar SIB JAG-OIL-2014). Supersedes ACEA C3 standards.
Emissions: Euro 6b certification applies to all 2014–2020 models (VCA Type Approval #VCA/JAG/508PS/2014). Dual three-way catalysts required for compliance.
Power Ratings: Measured under ECER 85 standards. Output reflects engine-only test with full exhaust system and emissions controls.
Jaguar Technical Information System (TIS): Docs AJV8-ENG-508-001, AJV8-ENG-508-003, JAG-TS-2718
VCA Type Approval Database (VCA/JAG/508PS/2014)
European Regulation (EC) No 715/2007
The Jaguar 508PS was used across Jaguar's F-TYPE/XJ platforms with longitudinal mounting and no licensed external applications. This engine received model-specific tuning adjustments-variable intake manifold on the F-TYPE and revised exhaust manifolds on the XJ-and from 2017 the facelifted F-TYPE models adopted updated supercharger actuator firmware, creating software compatibility limits. All adaptations are documented in OEM technical bulletins.
Locate the engine serial number stamped on the machined pad at the front of the right-hand cylinder block (Jaguar TIS AJV8-ID-001). The "508PS" designation is cast into the cylinder head near the cam cover. F-TYPE R models feature a transverse-mounted configuration with compact ancillary layout; XJ units have revised exhaust routing. Critical differentiation from AJ-V6: The 508PS has a 90° V8 configuration and presence of supercharger. Service parts require model-year verification—supercharger actuators for pre-2017 models are incompatible with post-2017 revisions due to updated sealing and firmware (Jaguar SIB JAG-SUP-2017).
The 508PS's primary reliability risk is supercharger bypass valve actuator degradation in high-mileage vehicles, with elevated incidence in poorly maintained examples. Jaguar internal field reports from 2015–2021 noted a significant number of F-TYPE R models requiring actuator replacement before 100,000 km, while UK DVSA MOT records show boost control and emissions faults as frequent causes of advisory notices. Extended oil intervals and thermal cycling accelerate wear, making correct oil selection and service adherence critical.
Analysis derived from Jaguar technical bulletins (2014-2020) and UK DVSA failure statistics (2016-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about JAGUAR 508PS.
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