The Renault C1E 752 is a 1,397 cc, inline‑four petrol engine produced between 1985 and 1996. It features a single overhead camshaft (SOHC) and two valves per cylinder, delivering modest power outputs suitable for compact city cars. Its simple, robust design prioritized ease of maintenance and fuel economy for everyday urban driving, with outputs ranging from 55 to 75 PS depending on the specific variant and carburettor setup.
Fitted primarily to the Renault 5 (Supercinq…
Production years 1985–1996 predate standardized Euro emissions regulations; compliance was based on national standards of the time (French DRIRE Type Approval).
The Renault C1E 752 is a 1,397 cc inline‑four petrol engine engineered for supermini applications (1985-1996). It combines a simple SOHC valvetrain with carburettor fuel delivery to deliver reliable, economical performance. Designed for pre-Euro regulatory environments, it prioritizes serviceability and low-cost ownership.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,397 cc | |
Fuel type | Petrol | |
Configuration | Inline‑4, SOHC, 8‑valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 75.2 mm × 78.0 mm | |
Power output | 55–75 PS (40–55 kW) | |
Torque | 95–105 Nm @ 3,000–3,500 rpm | |
Fuel system | Single-barrel carburettor (Solex or Weber) | |
Emissions standard | Pre-Euro (National Standards) | |
Compression ratio | 9.2:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Belt-driven camshaft | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 95 kg |
The Renault C1E 752 was used across Renault's Super 5 platform with transverse mounting. This engine received minor carburettor and ignition updates throughout its production run, with the most significant change being the introduction of a catalytic converter on later models for certain markets, creating minor parts variations. All adaptations are documented in OEM technical bulletins.
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The C1E 752's primary reliability risk is timing belt failure due to age or neglect, which can cause total engine destruction. Renault service data indicates a high correlation between missed belt changes and engine seizures. The carburettor's mechanical nature also makes it susceptible to gumming and wear, leading to drivability issues if not maintained. Adherence to the 60,000 km service interval is non-negotiable for long-term reliability.
Analysis derived from Renault technical bulletins (1985-1996) and French MOT (Contrôle Technique) failure statistics (1990-2000). 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
Yes, the C1E 752 is renowned for its mechanical simplicity and durability, provided the timing belt is changed religiously every 60,000 km. Its lack of complex electronics makes it easy to maintain. With basic care, these engines can easily surpass 200,000 km without major issues.
The absolute most critical issue is timing belt failure. Other common problems include carburettor gumming or wear, ignition system faults (distributor, HT leads), and minor oil leaks from the rocker cover or sump gasket. All are well-documented and relatively inexpensive to fix.
The C1E 752 was primarily used in the Renault 5 (Super 5 / Supercinq) from 1985 to 1996. It was also fitted to the base model variants of the first-generation Renault Clio (RN, RL) from its launch in 1991 until approximately 1994, when it was phased out in favor of newer engines.
Minor tuning is possible. Upgrades include fitting a performance carburettor (e.g., Weber 32/36 DGV), a free-flow exhaust, and a performance air filter. These can yield modest gains of 5-10 PS. Significant power increases are difficult without forced induction, which the bottom end wasn't designed for.
Excellent for its era. In a Renault 5 Super 5, expect around 6.5 L/100km (43 mpg UK) on the highway and 8.5 L/100km (33 mpg UK) in the city. A well-tuned Clio I with this engine should return similar figures, making it very economical for daily driving.
Yes. The C1E 752 is an interference engine. If the timing belt breaks or slips, the pistons will collide with the open valves, causing severe and expensive internal damage. This is why adhering to the 60,000 km replacement interval is absolutely critical.
Renault recommends a good quality mineral 15W-40 or 10W-40 engine oil for the C1E 752. While modern synthetics can be used, the older seals in these engines were designed for mineral oils, and synthetics can sometimes cause leaks in high-mileage units.
Comprehensive technical documentation and regulatory references
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Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
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.
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