The Volkswagen CV is a 1,588 cc, air‑cooled flat‑four petrol engine produced between 1974 and 1983. It featured a pushrod OHV valvetrain, twin‑barrel downdraft carburettor, and magnesium alloy crankcase. In standard form it delivered 55 kW (75 PS) at 5,000 rpm and 121 Nm of torque at 3,000 rpm, providing adequate performance for economy‑oriented Beetles and Type 2 vans.
Fitted to models such as the Beetle (1303/1303S), Type 2 T2b (Bay Window Bus), and Type 181 Trekker, the…
Production years 1974–1983 predate formal EU emissions standards (Euro 0 era). All units comply with national regulations in force at time of manufacture .
The Volkswagen CV is a 1,588 cc air‑cooled flat‑four petrol engine engineered for compact and light commercial vehicles (1974–1983). It combines a twin‑choke downdraft carburettor with pushrod OHV actuation to deliver predictable low‑end torque and straightforward field serviceability. Designed before formal Euro emissions regimes, it reflects pre‑regulation mechanical simplicity.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,588 cc | |
Fuel type | Petrol (Unleaded or leaded, depending on market) | |
Configuration | Flat‑4, OHV, 8‑valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 85.5 mm × 69.0 mm | |
Power output | 55 kW (75 PS) @ 5,000 rpm | |
Torque | 121 Nm @ 3,000 rpm | |
Fuel system | Twin‑barrel downdraft carburettor (Solex 34 PICT‑3) | |
Emissions standard | Pre‑Euro (Euro 0 equivalent) | |
Compression ratio | 7.5:1 | |
Cooling system | Air‑cooled (fan‑driven) | |
Turbocharger | None | |
Timing system | Gear‑driven camshaft (OHV pushrod) | |
Oil type | SAE 20W‑50 mineral oil (API SF/CC) | |
Dry weight | 97 kg |
The Volkswagen CV was used across Volkswagen's Type 1 and Type 2 platforms with rear-engine, rear-wheel-drive mounting and no external licensing. This engine received platform-specific adaptations—reinforced mounts in the Type 2 and revised cooling shrouds in the Beetle 1303S—and from 1979 the oil strainer and gallery redesign, creating minor interchange limits. All adaptations are documented in OEM technical bulletins.
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Field reports and technical service bulletins highlight component wear patterns under high-load operation. Adherence to manufacturer service intervals and approved fluid specifications is critical for long-term reliability.
Analysis derived from Volkswagen technical bulletins (1975–1982) and UK DVLA/DVSA historical failure statistics (1975–1990). 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
The CV is mechanically simple and robust when properly maintained. Early models (1974–1978) are prone to oil sludge if service intervals are ignored. Later units (post-1979) with the updated strainer are more resilient. Regular oil changes with detergent-grade 20W-50 oil are essential for longevity.
Top issues include oil sludge restricting flow, carburettor idle instability due to jet clogging, thermal reactor overheating from poor airflow, and pushrod tube oil leaks. These are well-documented in Volkswagen service bulletins from the late 1970s.
The CV powered the Beetle (1303/1303S, 1974–1979), Type 2 Bay Window Bus (1974–1979), and Type 181 Trekker/Thing (1974–1975). It was exclusively used in rear-engine, air-cooled platforms and was not licensed to other manufacturers.
Aftermarket ECU tuning is common on the CV platform, but increasing boost or altering engine parameters accelerates component wear, impacts emissions compliance, and may void vehicle warranties. Any modifications should be evaluated carefully by a qualified specialist.
Real-world consumption is ~9.5 L/100km (city) and ~7.0 L/100km (highway), or about 30–34 mpg UK combined. Economy varies with carburettor condition and driving style, but expect 28–36 mpg (UK) for a well-tuned CV in a Beetle.
No. The CV is a non-interference engine. If the timing gears fail (rare), the pistons will not contact the valves, minimizing catastrophic damage risk.
Volkswagen specifies SAE 20W-50 mineral oil meeting API SF/CC with detergent additives. Change every 5,000 km to prevent sludge buildup in the oil strainer and cooler, especially in stop-start or hot climates.
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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