BMW , 5 Series , E12 , 518 (1974-1981)

The BMW 5 Series E12 518 was a compact executive car produced from 1974 to 1981. It marked the beginning of the BMW 5 Series line and featured a range of innovative technologies and design elements.

Design and Features:

• The E12 platform, developed in collaboration with Triumph, provided a more spacious interior and improved suspension compared to its predecessor, the New Class.
• The 518 model was powered by a 1.6-liter inline-four engine producing 90 horsepower (66 kW), paired with either a four-speed manual or three-speed automatic transmission.
• The car featured a sleek and aerodynamic design, characterized by a prominent front grille, round headlights, and a sloping rear roofline.
• Comfort and convenience features included adjustable steering wheel, tilt-and-telescoping steering column, and a range of trim options.

Performance:

• The 1.6-liter engine provided adequate performance for its class, with a top speed of around 105 mph (169 km/h) and a 0-60 mph time of approximately 14 seconds.
• Fuel economy was respectable, with an estimated average fuel consumption of about 25 mpg (9 L/100km).

Safety Features:

• The E12 518 featured a number of innovative safety features for its era, including:
  • Rearview mirror and interior sun visors
  • Crash-tested rear bumper that absorbed impact without causing significant damage to the car's rear structure
  • Safety glass windshield with a laminated inner pane

Technical Specifications:

• Engine: 1.6-liter inline-four (M10/2)
• Power output: 66 kW (90 horsepower) at 5,500 rpm
• Torque output: 14 kg·m (110 N·m) at 4,000 rpm
• Transmission: Four-speed manual or three-speed automatic
• Brakes: Disc brakes on the front wheels and drum brakes on the rear

Production Numbers and Sales:

• Approximately 1.2 million units of the E12 series were produced between 1972 and 1981.
• The 518 model accounted for a significant portion of these sales, with production figures reportedly around 250,000 to 300,000 units.

Legacy:

• The E12 518 marked an important milestone in BMW's history as it transitioned from producing small two-door sedans (New Class) to more spacious and sophisticated executive cars.
• It laid the groundwork for future generations of the 5 Series line, including the successful E28, E34, and F10 models.