The Chrysler A126 is a 2,000 cc, inline‑four turbocharged petrol engine produced between 2019 and 2023. It features gasoline direct injection (GDI), dual overhead camshafts (DOHC), and a single-scroll turbocharger, delivering 270 hp (201 kW) and 295 lb‑ft (400 Nm) of torque. The twin-scroll turbo design enables rapid boost response, minimizing lag for strong low-end pull and confident overtaking.
Fitted primarily to the Giorgio-platform Alfa Romeo Giulia and Stelvio, the A126 was engineered for enthusiasts seeking a blend of Italian flair, precise handling, and accessible performance. Emissions compliance for its production period was achieved through its GDI system, catalytic converter, and particulate filter, meeting the applicable Euro 6d-TEMP standards for light-duty vehicles.
One documented engineering update involved the high-pressure fuel pump (HPFP) drive lobe profile. Early 2019 production units exhibited premature wear under high-load conditions, potentially leading to reduced fuel pressure. FCA addressed this by revising the camshaft lobe profile for all production from mid-2019 onward, as detailed in Technical Service Bulletin 09-022-19.
Production years 2019–2023 meet Euro 6d-TEMP emissions standards (VCA UK Type Approval #VCA/EMS/A126).
The Chrysler A126 is a 2,000 cc inline-four turbo petrol engine engineered for premium sports sedans and SUVs (2019-2023). It combines gasoline direct injection with a twin-scroll turbocharger to deliver responsive, high-output performance. Designed to meet Euro 6d-TEMP emissions standards, it balances spirited driving dynamics with regulatory compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,000 cc | |
| Fuel type | Petrol (Gasoline) | |
| Configuration | Inline-4, DOHC, 16-valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 84.0 mm × 90.0 mm | |
| Power output | 270 hp (201 kW) @ 5,250 rpm | |
| Torque | 295 lb-ft (400 Nm) @ 2,250 rpm | |
| Fuel system | Gasoline direct injection (GDI), Bosch HDEV6 injectors | |
| Emissions standard | Euro 6d-TEMP | |
| Compression ratio | 9.8:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Single twin-scroll turbo (IHI VF46) | |
| Timing system | Chain-driven DOHC with Variable Valve Timing (VVT) | |
| Oil type | API SP 5W-40 | |
| Dry weight | 345 lbs (156 kg) |
The twin-scroll turbo and GDI provide exhilarating acceleration but require premium unleaded fuel (98 RON) for optimal performance and to prevent knock. Regular oil changes with the correct 5W-40 viscosity are critical to protect the turbocharger and timing chain. The revised HPFP cam lobe (post-TSB 09-022-19) is a recommended upgrade for early 2019 vehicles to prevent fuel pressure issues. Carbon buildup on intake valves is a known characteristic of GDI engines and may require periodic cleaning.
Oil Specs: Requires API SP 5W-40 specification (FCA Owner's Manual 2019). This viscosity is specifically chosen for turbocharger protection.
Emissions: Euro 6d-TEMP certification applies to all 2019-2023 model year vehicles (VCA Type Approval #VCA/EMS/A126).
Power Ratings: Measured under SAE net standards (J1349). Ratings are for the base A126 configuration in the Alfa Romeo Giulia (FCA Powertrain Guide 2019).
FCA Service Manual (Publication 81-270-1901)
FCA Electronic Parts Catalog (EPC) Doc. 81-27-110-19
VCA Type Approval Database (VCA/EMS/A126)
SAE International: J1349 Engine Power Test Code
The Chrysler A126 was used across FCA's Giorgio platform with longitudinal mounting and was not licensed to other manufacturers. This engine received platform-specific adaptations-primarily related to engine management calibration for the Quadrifoglio's performance variant. All adaptations are documented in OEM technical bulletins.
The engine code "A126" is stamped on a machined pad on the front of the cylinder block, near the timing cover (FCA Service Manual 81-270-1901). The 8th digit of the VIN will be "6" for vehicles equipped with this 2.0L turbo engine. Visually, it can be identified by its aluminum block and heads, twin-scroll turbocharger on the exhaust manifold, and the "2.0 Turbo" badge on the intake manifold. It is distinct from the Ferrari-derived 2.9L V6 (code 630) by its inline-four configuration and smaller displacement.
The A126's primary long-term reliability consideration is maintaining oil quality and level to protect the turbocharger and timing chain. Internal FCA service data indicates that the majority of turbo-related faults are linked to infrequent oil changes or using incorrect oil viscosity. Carbon buildup on intake valves is common for GDI engines and can affect performance. Regular maintenance with the correct specification is critical for longevity.
Analysis derived from FCA technical bulletins (2019-2023) and internal service reports. Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about CHRYSLER A126.
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