Size comparison · drawn to scale
Porsche Cayenne (9Y0) vs Audi Q8: size comparison
- Length Q8 68 mm3 in longer
- Width Q8 12 mm0.5 in wider
- Height About the same height
- Boot Cayenne (9Y0) 165 L5.8 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 1:22 on a desktop screen · grid 500 mm1 ft · in Overlay both cars start at the front bumper Side view: dashed lines mark the axles Front view: width without mirrors Top view: footprint on the road
Dimensions and difference
The Cayenne (9Y0) is 68 mm3 in shorter, 12 mm0.5 in narrower and 9 mm0.4 in lower than the Q8. Its wheelbase is 100 mm4 in shorter.
| Dimension | Cayenne (9Y0) | Q8 | Difference, car 1 vs car 2 |
|---|---|---|---|
| Length | 4,918 mm16 ft 2 in16 ft 2 in4,918 mm | 4,986 mm16 ft 4 in16 ft 4 in4,986 mm | −68 mm−3 in −1.4% |
| Width | 1,983 mm6 ft 6 in6 ft 6 in1,983 mm | 1,995 mm6 ft 7 in6 ft 7 in1,995 mm | −12 mm−0.5 in −0.6% |
| Height | 1,696 mm5 ft 7 in5 ft 7 in1,696 mm | 1,705 mm5 ft 7 in5 ft 7 in1,705 mm | −9 mm−0.4 in −0.5% |
| Wheelbase | 2,895 mm9 ft 6 in9 ft 6 in2,895 mm | 2,995 mm9 ft 10 in9 ft 10 in2,995 mm | −100 mm−4 in −3.3% |
| Footprint | 9.75 m²105.0 sq ft105.0 sq ft9.75 m² | 9.95 m²107.1 sq ft107.1 sq ft9.95 m² | −0.19 m²−2.1 sq ft −2.0% |
| Boot | 770 L27.2 cu ft27.2 cu ft770 L | 605 L21.4 cu ft21.4 cu ft605 L | +165 L+5.8 cu ft +27.3% |
| Kerb weight | 2,060–2,370 kg4,542–5,225 lb4,542–5,225 lb2,060–2,370 kg | 2,145 kg4,729 lb4,729 lb2,145 kg | −85 kg−187 lb −4.0% |
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.
Cayenne (9Y0)
- Single garage
- Tight 582 mm1 ft 11 in to spare in length, 509 mm1 ft 8 in each side
- Parking bay
- Tight 82 mm3 in to spare in length, 259 mm10 in each side
Q8
- Single garage
- Tight 514 mm1 ft 8 in to spare in length, 503 mm1 ft 8 in each side
- Parking bay
- Tight 14 mm0.6 in to spare in length, 253 mm10 in each side
Frequently asked questions
Which is bigger, the Porsche Cayenne (9Y0) or the Audi Q8?
The Audi Q8 is the bigger car by footprint (length × width). The Cayenne (9Y0) is 68 mm shorter, 12 mm narrower and 9 mm lower than the Q8. Its wheelbase is 100 mm shorter.
Will the Porsche Cayenne (9Y0) and the Audi Q8 fit in a standard garage?
In a typical single garage of 5.5 × 3.0 m inside: The Porsche Cayenne (9Y0) fits, but it is tight to get out (582 mm to spare in length, 509 mm each side). The Audi Q8 fits, but it is tight to get out (514 mm to spare in length, 503 mm each side). Widths are without mirrors; check your own garage with our garage checker.
Which has the bigger boot?
The Porsche Cayenne (9Y0): 770 L against 605 L in the Audi Q8 (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.
