Fuel tank: 9 of 9 variants rated.
Toyota iQ 1.0 VVT-i Access tops the Toyota iQ ranking by Fuel tank, at 32 L (8.5 gal US).
Across 9 ranked variants, Fuel tank spans from 32 L (8.5 gal US) to 32 L (8.5 gal US).
| # | Variant | Year | Body | Fuel | Fuel tank |
|---|---|---|---|---|---|
| 1 | Toyota iQ 1.0 VVT-i Access | 2010 | Hatchback | Petrol | 32 L (8.5 gal US) |
| 2 | Toyota iQ 1.0 VVT-i Aspiration Bronze+1 | 2010 | Hatchback | Petrol | 32 L (8.5 gal US) |
| 3 | Toyota iQ 1.0 VVT-i Aspiration Pearl+1 | 2010 | Hatchback | Petrol | 32 L (8.5 gal US) |
| 4 | Toyota iQ 1.0 VVT-i Comfort+1 | 2009 | Hatchback | Petrol | 32 L (8.5 gal US) |
| 5 | Toyota iQ 1.0 VVT-i Black Edition | 2009 | Hatchback | Petrol | 32 L (8.5 gal US) |
| 6 | Toyota iQ 1.0 VVT-i Aspiration+1 | 2009 | Hatchback | Petrol | 32 L (8.5 gal US) |
| 7 | Toyota iQ 1.3 VVT-i Dynamic+1 | 2009 | Hatchback | Petrol | 32 L (8.5 gal US) |
| 8 | Toyota iQ 1.4 D-4D-F Comfort | 2009 | Hatchback | Diesel | 32 L (8.5 gal US) |
| 9 | Toyota iQ 1.4 D-4D-F Aspiration | 2009 | Hatchback | Diesel | 32 L (8.5 gal US) |