Size comparison · drawn to scale
Alfa Romeo Junior I vs Citroen C4 Cactus I: size comparison
- Length Junior I 13 mm0.5 in longer
- Width Junior I 51 mm2 in wider
- Height Junior I 19 mm0.7 in taller
- Boot Junior I 57 L2.0 cu ft more
Car 1 blue, solid outline
Car 2 coral, dashed outline

Change cars
Zoom in to read the measurements - or see the table below.
Scale about 1:20 on a desktop screen · grid 500 mm1 ft · in Overlay both cars start at the front bumper Side view: dashed lines mark the axles Front view: width without mirrors Top view: footprint on the road
Dimensions and difference
The Junior I is 13 mm0.5 in longer, 51 mm2 in wider and 19 mm0.7 in taller than the C4 Cactus I. Its wheelbase is 45 mm2 in shorter.
| Dimension | Junior I | C4 Cactus I | Difference, car 1 vs car 2 |
|---|---|---|---|
| Length | 4,170 mm13 ft 8 in13 ft 8 in4,170 mm | 4,157 mm13 ft 8 in13 ft 8 in4,157 mm | +13 mm+0.5 in +0.3% |
| Width | 1,780 mm5 ft 10 in5 ft 10 in1,780 mm | 1,729 mm5 ft 8 in5 ft 8 in1,729 mm | +51 mm+2 in +2.9% |
| Height | 1,500 mm4 ft 11 in4 ft 11 in1,500 mm | 1,481 mm4 ft 10 in4 ft 10 in1,481 mm | +19 mm+0.7 in +1.3% |
| Wheelbase | 2,550 mm8 ft 4 in8 ft 4 in2,550 mm | 2,595 mm8 ft 6 in8 ft 6 in2,595 mm | −45 mm−2 in −1.7% |
| Footprint | 7.42 m²79.9 sq ft79.9 sq ft7.42 m² | 7.19 m²77.4 sq ft77.4 sq ft7.19 m² | +0.24 m²+2.5 sq ft +3.3% |
| Boot | 415 L14.7 cu ft14.7 cu ft415 L | 358 L12.6 cu ft12.6 cu ft358 L | +57 L+2.0 cu ft +15.9% |
| Kerb weight | Not in our catalog yet | 1,040–1,165 kg2,293–2,568 lb2,293–2,568 lb1,040–1,165 kg | - |
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. Weight difference compares the lightest versions.
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.
Junior I
- Single garage
- Fits 1,330 mm4 ft 4 in to spare in length, 610 mm2 ft 0 in each side
- Parking bay
- Tight 830 mm2 ft 9 in to spare in length, 360 mm1 ft 2 in each side
C4 Cactus I
- Single garage
- Fits 1,343 mm4 ft 5 in to spare in length, 636 mm2 ft 1 in each side
- Parking bay
- Tight 843 mm2 ft 9 in to spare in length, 386 mm1 ft 3 in each side
Frequently asked questions
Which is bigger, the Alfa Romeo Junior I or the Citroen C4 Cactus I?
The Alfa Romeo Junior I is the bigger car by footprint (length × width). The Junior I is 13 mm longer, 51 mm wider and 19 mm taller than the C4 Cactus I. Its wheelbase is 45 mm shorter.
Will the Alfa Romeo Junior I and the Citroen C4 Cactus I fit in a standard garage?
In a typical single garage of 5.5 × 3.0 m inside: The Alfa Romeo Junior I fits with room to open the doors (1,330 mm to spare in length, 610 mm each side). The Citroen C4 Cactus I fits with room to open the doors (1,343 mm to spare in length, 636 mm each side). Widths are without mirrors; check your own garage with our garage checker.
Which has the bigger boot?
The Alfa Romeo Junior I: 415 L against 358 L in the Citroen C4 Cactus I (seats up, as quoted by the maker).
Drawn to one scale
Both cars use the same millimetre grid, so a longer bonnet or a taller roof shows exactly as it is.
Wheels at the real wheelbase
Dashed lines mark the axles. In Overlay both cars start at the front bumper; car 2 has a dashed outline.
Will it fit my garage?
Switch to Top view, or to feet and inches if your garage plan is in feet. Allow about 600 mm (2 ft) for opening the doors.
