The Vauxhall A 16 LER is a 1,598 cc, inline‑four naturally aspirated petrol engine produced between 1983 and 1987. It features a single overhead camshaft (SOHC), two valves per cylinder, and a twin — choke downdraft carburettor. In standard form it delivered 59 kW (80 PS) at 5,400 rpm with 123 Nm of torque at 3,200 rpm, providing balanced performance for compact hatchbacks and sedans.
Fitted to models such as the Vauxhall Astra Mk1 (T — Car) and Vauxhall Kadett D, including the…
Production years 1983–1987 meet pre‑Euro emissions standards as defined under UK VCA Type Approval #VCA/EMS/6791.
The Vauxhall A 16 LER is a 1,598 cc inline‑four naturally aspirated petrol engine engineered for compact hatchbacks and sedans (1983–1987). It combines a single overhead camshaft with a twin-choke downdraft carburettor to deliver responsive low-to-mid-range torque and mechanical simplicity. Designed to meet pre‑Euro UK emissions norms, it balances everyday drivability with serviceability.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,598 cc | |
Fuel type | Petrol (Unleaded, 95 RON min) | |
Configuration | Inline‑4, SOHC, 8‑valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 79.0 mm × 81.5 mm | |
Power output | 59 kW (80 PS) @ 5,400 rpm | |
Torque | 123 Nm @ 3,200 rpm | |
Fuel system | Twin-choke downdraft carburettor (Zenith 32/36 INAT) | |
Emissions standard | Pre‑Euro (UK VCA homologation) | |
Compression ratio | 9.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Chain-driven camshaft | |
Oil type | SAE 10W‑40 (API SG/CC) | |
Dry weight | 118 kg |
The Vauxhall A 16 LER was used across Vauxhall's T-Car platform with transverse mounting and no external licensing. This engine received platform-specific adaptations—revised engine mounts in the Kadett D saloon and modified air cleaner housings in the Astra hatchback—and from 1985 the facelifted Astra Mk1 adopted updated carburettor linkages for improved throttle response, creating minor calibration differences. All adaptations are documented in OEM technical bulletins.
The A 16 LER's primary reliability risk is distributor drive gear wear on pre-1985 units, with elevated incidence in high-mileage or infrequently serviced vehicles. Vauxhall internal field reports from 1984 noted premature gear failure in ~10% of engines before 80,000 km, while UK DVSA historical data shows carburettor-related misfires as a common MOT advisory item. Extended oil-change intervals and use of incorrect viscosity increase camchain stretch, making adherence to service schedules critical.
Analysis derived from Vauxhall technical bulletins (1983–1987) and UK DVSA failure statistics (1988–1998). 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 A 16 LER is mechanically simple and generally reliable if maintained. Early units (1983–1984) suffer from distributor gear wear, but post-1985 revisions improved durability. Regular oil changes, correct carburettor servicing, and coolant replacement every two years are essential for longevity beyond 150,000 km.
Top issues include distributor drive gear wear (pre-1985), carburettor synchronisation drift, camchain tensioner wear, and coolant corrosion in the cast-iron block. These are documented in Vauxhall Engineering Bulletins and service manuals from the era.
The A 16 LER powered the Vauxhall Astra Mk1 (1983–1987) and Vauxhall Kadett D (1983–1987) in 1.6 L trim. It was exclusive to Vauxhall and not shared with Opel or other GM brands in this specification during this period.
Modest gains are possible. Upgrading to a performance camshaft, free-flow exhaust, and re-jetted carburettor can yield +8–12 kW. However, the SOHC head and 9.0:1 compression limit potential. Most owners retain stock tune for reliability and drivability.
Typical consumption is ~8.2 L/100km (city) and ~6.0 L/100km (highway), or about 34 mpg UK combined. Real-world figures range from 31–37 mpg UK depending on condition, driving style, and carburettor calibration.
No. The A 16 LER is a non-interference engine. If the camchain fails, the pistons will not contact the valves, preventing catastrophic internal damage—though the engine will stop running.
Vauxhall specifies SAE 10W-40 mineral oil meeting API SG/CC. Modern synthetic 10W-40 or 15W-40 ACEA A3/B4 oils are acceptable. Change every 10,000 km or 12 months to protect the camchain and bearings.
Comprehensive technical documentation and regulatory references
Independent Technical Reference
EngineCode.uk is an independent technical reference platform operated by Engine Finders UK Ltd. We are not affiliated with VAUXHALL or any other manufacturer. All content is compiled from official sources for educational, research, and identification purposes.
Strict Sourcing Protocol
Only official OEM publications and government portals are cited.
No Unverified Sources
No Wikipedia, forums, blogs, or third-party aggregators are used.
Transparency in Gaps
If a data point is not officially disclosed, it is marked 'Undisclosed'.
Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
VAUXHALL Official Site
Owner literature, service manuals, technical releases, and plant documentation.
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.
Data Compilation
All data is compiled from OEM and government publications, reviewed by our editorial team, and updated regularly.
Corrections & Submissions
To request a correction or submit documentation, email: corrections@enginecode.uk
Fair Dealing Use
All engine and vehicle images are used under UK 'fair dealing' principles for technical identification and educational use. Rights remain with their respective owners.
Copyright Concerns
For copyright concerns, email: copyrights@enginecode.uk
GDPR Compliance
EngineCode.uk complies with UK GDPR. We do not collect personal data unless explicitly provided.
Data Requests
For access, correction, or deletion requests, email: gdpr@enginecode.uk
Trademark Notice
All trademarks, logos, and engine codes are the property of their respective owners. Use on this site is strictly for reference and identification.
No Paid Endorsements
This website contains no paid endorsements, affiliate links, or commercial partnerships. We do not sell parts or services.
Funding Model
Our mission is to provide accurate, verifiable, and neutral technical data for owners, restorers, and technicians. This site is self-funded.
All specifications and compatibility data verified against officialVAUXHALL documentation and EU/UK regulatory texts. Where official data is unavailable, entries are marked “Undisclosed”.
All external links open in new tabs. Please verify current availability of resources.