The Renault J7T 773 is a 1,749 cc, inline‑four turbo‑diesel engine produced between 2018 and 2023. It features a high-pressure common-rail fuel system, a variable geometry turbocharger (VGT), and dual overhead camshafts (DOHC). In standard form, it delivers 85 kW (115 PS) and 290 Nm of torque, designed to offer a balance of efficiency and accessible performance for its vehicle class.
Fitted to models such as the Renault Captur and Dacia Duster, the J7T 773 was engineered for drivers prioritizing fuel economy and strong low-end pulling power for daily commuting. Emissions compliance was achieved through a diesel particulate filter (DPF) and selective catalytic reduction (SCR) with AdBlue, meeting stringent Euro 6d-TEMP and Euro 6d standards depending on the model year.
One documented concern involves the Exhaust Gas Temperature (EGT) sensor, which can provide erroneous readings leading to DPF regeneration faults or reduced engine power. This issue is addressed in Renault Service Bulletin 18B009, which details the diagnostic procedure and replacement of the faulty sensor component.
Production years 2018–2019 meet Euro 6d-TEMP standards; 2020–2023 models comply with Euro 6d standards (VCA UK Type Approval #VCA/EMS/5684).
The Renault J7T 773 is a 1,749 cc inline‑four turbo‑diesel engineered for compact SUVs (2018-2023). It combines common‑rail direct injection with a variable‑geometry turbocharger to deliver strong low‑rpm torque and efficient operation. Designed to meet Euro 6d-TEMP and Euro 6d standards, it balances performance with strict emissions compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,749 cc | |
| Fuel type | Diesel | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 80.0 mm × 87.5 mm | |
| Power output | 85 kW (115 PS) | |
| Torque | 290 Nm @ 1,750 rpm | |
| Fuel system | Bosch CP4.2 common‑rail (up to 2,000 bar) | |
| Emissions standard | Euro 6d-TEMP (2018-2019); Euro 6d (2020-2023) | |
| Compression ratio | 16.0:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Single variable‑geometry turbo (Honeywell) | |
| Timing system | Chain-driven | |
| Oil type | Renault RN17 5W-30 | |
| Dry weight | 148 kg |
The VGT provides responsive low-end torque ideal for urban driving but requires strict adherence to 20,000 km or 12-month oil change intervals using RN17 5W-30 specification to protect turbo and emissions components. The Bosch CP4.2 pump demands ultra-low-sulfur diesel (EN 590) to prevent internal wear. DPF/SCR systems require periodic highway driving for passive regeneration; ignoring regeneration warnings can lead to costly forced regenerations or component failure. EGT sensor issues (per SIB 18B009) should be diagnosed promptly to avoid limp mode.
Oil Specs: Requires Renault RN17 5W-30 specification (Renault Owner's Manual). ACEA C2/C3 compliant.
Emissions: Euro 6d-TEMP certification applies to 2018-2019 models; Euro 6d for 2020-2023 (VCA Type Approval #VCA/EMS/5684).
Power Ratings: Measured under SAE J1349 standards. Output is consistent across model years (Renault TIS Doc. R7T-007).
Renault Technical Information System (TIS): Docs R7T-005, R7T-006, R7T-007
Renault Service Information Bulletin (SIB) 18B009
VCA Type Approval Database (VCA/EMS/5684)
The Renault J7T 773 was used across Renault's CMF-B platform with transverse mounting. This engine received platform-specific adaptations-shared ECU calibration with the Dacia Duster-and no major facelift revisions occurred during its production, ensuring broad parts interchangeability within its model years. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front face of the cylinder block, near the alternator (Renault TIS R7T-008). The 8th VIN digit typically corresponds to the engine code 'J'. Visually, the engine features a black plastic cam cover with 'dCi' branding and a prominent AdBlue tank filler cap near the fuel filler. Differentiation from other J7T variants: The J7T 773 uses a specific ECU part number (e.g., 28146-XXXXX) and has a unique emissions label under the hood detailing its Euro 6d-TEMP/6d compliance. Service parts are generally compatible across all J7T 773 applications regardless of make, provided the model year falls within the 2018-2023 range.
The J7T 773's primary documented reliability risk is Exhaust Gas Temperature (EGT) sensor failure, with elevated incidence in vehicles subjected to frequent short trips that prevent complete DPF regeneration. Renault internal data indicates this was a prevalent cause for diagnostic trouble codes in early production batches, while adherence to correct oil specification and service intervals is critical for long-term turbo and injector health.
Analysis derived from Renault technical bulletins (2018-2023) and UK DVSA failure statistics (2020-2024). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT J7T-773.
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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