Infiniti G Saloon (2009-2013) running costs and reliability

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Running costs rating: 3 out of 53.0

Written by Simon Harris Published: 6 June 2019

Miles per pound (mpp)

Reliable fuel consumption data for comparison purposes is not available for this model.

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Fuel economy

A more stringent standard for fuel economy (WLTP) was introduced from September 2017, and this model was not required to undergo that test. Its fuel economy measured under the previous test system was 25 - 26 mpg. However these figures are less likely to be achievable in real world driving and so should never be compared to another car's mpg which was measured under the newer, more realistic WLTP system.

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The Infiniti G saloon running costs could never be called cheap, but it is well equipped for the money, with equipment lists that would mean thousands spent on options with other premium cars. The petrol engine is thirsty in the sense that customers choosing from other brands would have the option of a diesel, and its relatively high emissions leads to high annual road tax.

Servicing charges arelikely to be on a par with Porsche, but customers are offered a free collection and delivery service up to 150 miles from the nearest Infiniti Centre.

Only one petrol engine is available, and although it’s relatively clean for a normally aspirated 320bhp V6, CO2-wise the Infiniti G emissions in excess of 240g/km are high for a car of this type.

Infiniti G reliability shouldn’t be an issue given that the firm draw on Nissan’s technical expertise, and Nissan has a decent reputation on this front. However, any problems encountered will most likely be dealt with swiftly by Infiniti.