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Size comparison · drawn to scale

Holden Monaro HJ vs Kia Optima: size comparison

  • Length About the same length
  • Width Monaro HJ 15 mm0.6 in wider
  • Height Optima 88 mm3 in taller

Car 1 blue, solid outline

Monaro HJ Holden · 1974–1976 · Sedan Monaro HJ 4,839 × 1,875 × 1,367 mm15 ft 11 in × 6 ft 2 in × 4 ft 6 in Change

Car 2 coral, dashed outline

Optima Kia · 2015–2020 · Sedan Optima 4,845 × 1,860 × 1,455 mm15 ft 11 in × 6 ft 1 in × 4 ft 9 in Change
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  • Car 1, blue, solid outline: Monaro HJ
  • Car 2, coral, dashed outline: Optima
0 m1 m2 m3 m4 m5 m6 m1 m0 ft1 ft2 ft3 ft4 ft5 ft6 ft7 ft8 ft9 ft10 ft11 ft12 ft13 ft14 ft15 ft16 ft17 ft18 ft19 ft20 ft21 ft1 ft2 ft3 ft4 ftWheelbase 2,819 mmWheelbase 9 ft 3 inLength 4,839 mmLength 15 ft 11 in1,367 mm4 ft 6 inWheelbase 2,805 mmWheelbase 9 ft 2 inLength 4,845 mmLength 15 ft 11 in1,455 mm4 ft 9 in

Scale about 1:22 on a desktop screen · grid 500 mm1 ft · in Overlay both cars start at the front bumper Side view: dashed lines mark the axles

Dimensions and difference

The Monaro HJ is 6 mm0.2 in shorter, 15 mm0.6 in wider and 88 mm3 in lower than the Optima. Its wheelbase is 14 mm0.6 in longer.

DimensionMonaro HJOptimaDifference, car 1 vs car 2
Length4,839 mm15 ft 11 in15 ft 11 in4,839 mm4,845 mm15 ft 11 in15 ft 11 in4,845 mm −6 mm−0.2 in −0.1%
Width1,875 mm6 ft 2 in6 ft 2 in1,875 mm1,860 mm6 ft 1 in6 ft 1 in1,860 mm +15 mm+0.6 in +0.8%
Height1,367 mm4 ft 6 in4 ft 6 in1,367 mm1,455 mm4 ft 9 in4 ft 9 in1,455 mm −88 mm−3 in −6.0%
Wheelbase2,819 mm9 ft 3 in9 ft 3 in2,819 mm2,805 mm9 ft 2 in9 ft 2 in2,805 mm +14 mm+0.6 in +0.5%
Footprint9.07 m²97.7 sq ft97.7 sq ft9.07 m²9.01 m²97.0 sq ft97.0 sq ft9.01 m² +0.06 m²+0.7 sq ft +0.7%
BootNot in our catalog yet505 L17.8 cu ft17.8 cu ft505 L -

Width without mirrors. Figures come from the catalog version pages; the drawing uses the same numbers. Body outlines are generic for the body type - proportions are exact, styling is not.

Garage and parking

A typical single garage is about 5.5 × 3.0 m18 ft 1 in × 9 ft 10 in inside; a parking bay about 5.0 × 2.5 m16 ft 5 in × 8 ft 2 in. Room to open a door: about 600 mm2 ft each side.

Monaro HJ

Single garage
Tight 661 mm2 ft 2 in to spare in length, 563 mm1 ft 10 in each side
Parking bay
Tight 161 mm6 in to spare in length, 313 mm1 ft 0 in each side

Optima

Single garage
Tight 655 mm2 ft 2 in to spare in length, 570 mm1 ft 10 in each side
Parking bay
Tight 155 mm6 in to spare in length, 320 mm1 ft 1 in each side

Check your own garage with these cars

Frequently asked questions

Which is bigger, the Holden Monaro HJ or the Kia Optima?

They are practically the same size. The Monaro HJ is 6 mm shorter, 15 mm wider and 88 mm lower than the Optima. Its wheelbase is 14 mm longer.

Will the Holden Monaro HJ and the Kia Optima fit in a standard garage?

In a typical single garage of 5.5 × 3.0 m inside: The Holden Monaro HJ fits, but it is tight to get out (661 mm to spare in length, 563 mm each side). The Kia Optima fits, but it is tight to get out (655 mm to spare in length, 570 mm each side). Widths are without mirrors; check your own garage with our garage checker.

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