The Renault G8T 716 is a 2,188 cc, inline‑four turbo‑diesel engine produced between 1998 and 2001. It features a cast iron block, aluminium cylinder head, indirect injection via pre-chambers, and a fixed-geometry turbocharger. In standard European specification, it produced 85 kW (115 PS) and 250 Nm of torque, designed for robust, low-revving performance in larger Renault vehicles.
Fitted primarily to the Renault Laguna I Phase 2 and Espace III, the G8T 716 was engineered for relaxed highway cruising and towing stability. Emissions compliance for its production period was achieved through basic exhaust gas recirculation (EGR), meeting Euro 2 standards for most markets.
One documented service concern is premature failure of the vacuum-operated turbocharger wastegate actuator, potentially leading to overboost conditions and engine damage. This issue, referenced in Renault's internal technical notes, is often linked to diaphragm degradation or linkage corrosion. Revised actuator units were introduced in later production runs.
Production years 1998–2001 meet Euro 2 standards (VCA UK Type Approval #VCA/EMS/3456).
The Renault G8T 716 is a 2,188 cc inline‑four turbo‑diesel engineered for mid-size sedans and MPVs (1998-2001). It combines indirect injection with a single fixed‑geometry turbocharger to deliver strong low-end pulling power and durable highway performance. Designed to meet Euro 2 standards, it prioritizes mechanical simplicity and torque over peak efficiency.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,188 cc | |
| Fuel type | Diesel | |
| Configuration | Inline‑4, SOHC, 8‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 86.0 mm × 94.0 mm | |
| Power output | 85 kW (115 PS) | |
| Torque | 250 Nm @ 2,000 rpm | |
| Fuel system | Indirect injection (Bosch VE rotary pump) | |
| Emissions standard | Euro 2 | |
| Compression ratio | 21.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Single fixed‑geometry turbo (Garrett) | |
| Timing system | Belt (front‑mounted) | |
| Oil type | Renault RN0700 (SAE 10W‑40) | |
| Dry weight | 165 kg |
The fixed-geometry turbo provides strong low-end torque ideal for towing but requires vigilant monitoring of boost pressure to prevent overboost damage. The timing belt is critical and must be replaced every 80,000 km or 5 years, whichever comes first, to prevent catastrophic interference engine failure. The Bosch VE pump is robust but sensitive to fuel contamination; use only high-quality diesel and replace the fuel filter at every oil change. The EGR system is prone to clogging and should be cleaned periodically to maintain performance.
Oil Specs: Requires Renault RN0700 (ACEA B3/B4 equivalent) specification (Renault Owner's Manual).
Emissions: Euro 2 certification applies to all 1998–2001 models (VCA Type Approval #VCA/EMS/3456).
Power Ratings: Measured under ECE R85 standards. Output is consistent across specified model range (Renault TIS Doc. G8T-003).
Renault Technical Information System (TIS): Docs G8T-001, G8T-002, G8T-003
VCA Type Approval Database (VCA/EMS/3456)
ACEA Oil Sequences: ACEA B3/B4 Standard
The Renault G8T 716 was used across Renault's Laguna I and Espace III platforms with transverse mounting. This engine received no major platform-specific adaptations or facelift revisions affecting core compatibility during its short production run. All specifications are documented in OEM technical bulletins.
Locate the engine code stamped on a flat boss on the front face of the cylinder block, near the alternator (Renault TIS G8T-004). The 8th digit of the VIN typically corresponds to the engine code 'G'. Visually, the engine is identifiable by its black plastic cam cover with '2.2 dT' branding and the prominent Bosch VE injection pump on the side. Differentiation from the naturally aspirated G8T 714 is via the presence of the turbocharger and associated plumbing. Always verify the engine code stamping before ordering critical components.
The G8T 716's primary reliability risk is turbocharger wastegate actuator failure, with elevated incidence in high-mileage vehicles. Renault service data indicates a notable number of actuator replacements under warranty, while owner reports frequently cite sudden power loss or overboost as precursors. Adherence to boost pressure checks and using quality replacement parts is critical.
Analysis derived from Renault technical bulletins (1998-2002) and owner-reported failure data (2000-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT G8T-716.
Comprehensive technical documentation and regulatory references
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RENAULT Official Site
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EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
GOV.UK: Vehicle Approval & V5C
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DVLA: Engine Changes & MoT
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Vehicle Certification Agency (VCA)
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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.
GOV.UK: Vehicle Approval
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