The Lotus Elan Series 3 represented the most significant evolution of the original Elan concept since its introduction in 1962. Produced between 1965 and 1968, the S3 expanded the Elan range beyond the traditional open sports car by introducing the Fixed Head Coupé (FHC) alongside the Drop Head Coupé (DHC). The result was a broader, more refined model range that retained the handling and driving character that had made the Elan famous while addressing many of the practical shortcomings identified in earlier versions.
Unlike the transition from the Series 1 to Series 2, which focused primarily on detail improvements, the Series 3 introduced substantial new body styles, equipmnt levels, and engineering refinements. Lotus assigned separate type numbers to the two body styles. The Fixed Head Coupé became Type 36, while the convertible version became Type 45. Both versions shared the same backbone chassis philosophy, fiberglass body construction, and Lotus Twin Cam powerplant that defined the Elan family.
History
By 1965 the Elan had firmly established itself as one of the world’s most respected sports cars. Contemporary road testers consistently praised its steering, handling, ride quality, and overall driving experience. Lotus recognized that many customers wanted the performance and agility of the Elan in a more practical and refined package. The answer was the Fixed Head Coupé.
Introduced in September 1965, the Type 36 Fixed Head Coupé transformed the Elan from a pure roadster into a small grand touring sports car. The new roofline improved weather protection, reduced noise levels, and created a more mature appearance. While the open Elan remained available, the coupé quickly became popular with drivers seeking year-round usability.
The Series 3 also marked the arrival of the Special Equipment (SE) models as a major part of the range. The SE package combined increased engine performance with additional equipment and convenience features. In many ways, the SE models became the definitive Elans of the period, offering a combination of speed, comfort, and refinement that appealed to enthusiastic drivers.
Throughout its production life the Series 3 benefited from a continuous process of refinement. Lotus improved ventilation, interior comfort, braking options, transmission choices, suspension details, and electrical equipment. The company also responded to owner feedback by relocating the battery to the boot, enlarging the luggage compartment opening, improving sound insulation, and introducing electric windows.
By the end of production in 1968, the Series 3 had become the most developed version of the original Elan concept and laid the groundwork for the Series 4 and Sprint models that followed.
Production Notes
Series 3 production began in September 1965 with the introduction of the Fixed Head Coupé and continued through the introduction of the Series 4 in 1968.
Approximately 2,650 Series 3 Elans were produced across both body styles, making it one of the most successful variants of the original Elan family.
Production Summary
| Item | Value |
|---|---|
| Model | Lotus Elan Series 3 |
| Production Years | 1965–1968 |
| Fixed Head Coupé | Type 36 |
| Drop Head Coupé | Type 45 |
| Estimated Production | 2,650 units |
| Engine | 1,558 cc Lotus Twin Cam |
| Variants | Standard and SE |
Major Production Milestones
| Date | Chassis | Event |
|---|---|---|
| September 1965 | 36/4510 | S3 FHC introduced |
| November 1965 | 36/5147 | Close-ratio gearbox available |
| January 1966 | 26/5282 | SE DHC introduced |
| June 1966 | 45/5701 | S3 DHC SE introduced |
| June 1966 | 45/5702 | S3 DHC introduced |
| July 1966 | 36/5977 | S3 FHC SE introduced |
The transition from the earlier Type 26 chassis numbering to the Type 36 and Type 45 numbering system reflects the growing maturity of the Elan range and the increasing distinction between body styles.
Unit Numbers
Type Numbers
| Type | Description |
|---|---|
| Type 36 | Fixed Head Coupé (FHC) |
| Type 45 | Drop Head Coupé (DHC) |
Chassis Ranges
| Model | Chassis Range |
|---|---|
| Type 36 FHC | 36/4510–36/9824 |
| Type 45 DHC | 45/5701–45/9823 |
These chassis sequences provide one of the most reliable methods of identifying Series 3 cars and distinguishing them from earlier Series 2 and later Series 4 models.
Engines
All Series 3 models were powered by the Lotus Twin Cam engine, based on the proven 1,558 cc design introduced during Series 1 production.
The standard engine produced approximately 105 bhp, while the Special Equipment models received performance enhancements including revised carburetor calibration, higher-lift camshafts, and a four-branch exhaust system. Lotus marketing literature often quoted 115 bhp for SE models, helping establish the SE as the enthusiast’s choice.
The engine’s reputation rested not simply on horsepower but on flexibility. Contemporary testers repeatedly praised its willingness to pull from low engine speeds while remaining smooth and responsive throughout the rev range. The combination of modest weight and strong performance remained one of the Elan’s defining characteristics.
Engine Summary
| Specification | Standard | SE |
|---|---|---|
| Capacity | 1,558 cc | 1,558 cc |
| Power | 105 bhp | 108–115 bhp |
| Configuration | Lotus Twin Cam | Lotus Twin Cam |
| Fuel System | Twin Carburetors | Twin Carburetors |
Options
The Series 3 offered more equipment and personalization than any previous Elan.
Standard Improvements
| Feature | Description |
|---|---|
| Fixed Head Coupé | New enclosed body style |
| Electric Windows | Available on SE models |
| Enlarged Boot Opening | Improved luggage access |
| Additional Sound Insulation | Reduced cabin noise |
| Fresh-Air Ventilation | Added during production |
| Full Carpeting | Improved refinement |
| Boot-Mounted Battery | Improved packaging |
| Updated Hood Design | Improved DHC weather protection |
Optional Equipment
| Option | Notes |
|---|---|
| Close-Ratio Gearbox | Available from November 1965 |
| 3.55 Final Drive | High-ratio gearing |
| Servo-Assisted Brakes | Optional equipment |
| Limited Slip Differential | Available through homologation |
| Knock-On Wheels | Available on SE models |
| Special Equipment Package | Performance and luxury upgrades |
The Special Equipment package became particularly important during the Series 3 era and effectively served as the premium version of the Elan.
Performance Data
The Series 3 retained the Elan’s reputation as one of the quickest and most capable sports cars in its class.
Contemporary Performance Tests
| Source | Date | 0–60 mph | Top Speed |
|---|---|---|---|
| Road & Track | November 1967 | 8.0 sec | 119 mph |
| Sports Car Graphic | June 1966 | 7.9 sec | 115 mph |
| Car (via Taylor) | January 1966 | 7.6 sec | 110 mph |
Sports Car Graphic Test Results
| Speed | Time |
|---|---|
| 0–30 mph | 2.8 sec |
| 0–40 mph | 4.1 sec |
| 0–50 mph | 5.9 sec |
| 0–60 mph | 7.9 sec |
| 0–80 mph | 11.1 sec |
| 0–100 mph | 17.0 sec |
Road testers consistently concluded that handling, steering feel, and driver engagement mattered more than the raw performance numbers. Many considered the Elan the benchmark sports car of its era.
Technical Data
General Specifications
| Specification | Value |
|---|---|
| Engine | Lotus Twin Cam |
| Capacity | 1,558 cc |
| Body Styles | FHC and DHC |
| Transmission | 4-speed manual |
| Differential | 3.55:1 or 3.90:1 |
| Fuel Capacity | 12.5 gallons |
| Steering | Rack and pinion |
| Brakes | Four-wheel disc |
Weight Summary
| Model | Weight |
|---|---|
| FHC Standard | 1,520 lb |
| FHC SE | 1,530 lb |
| DHC Standard | 1,530 lb |
| DHC SE | 1,540 lb |
Series 3 Identification Features
| Feature | Series 3 Change |
|---|---|
| Body Styles | Introduction of FHC |
| Windows | Electric operation available |
| Dashboard | Fresh-air vents added |
| Boot Lid | Enlarged opening |
| Battery | Relocated to boot |
| Suspension | Rear tower brace added |
| Steering Wheel | Chapman signature design |
| Hood Design | Permanently attached DHC hood |
These changes made the Series 3 noticeably more refined and practical than the earlier Series 1 and Series 2 cars while preserving the core driving experience.
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