Bentley Arnage Saloon (1998-2009) running costs and reliability

Looking for a different model? (change model)

Running costs rating: 1.5 out of 51.5

Written by David Ross Published: 6 June 2019

Miles per pound (mpp)

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

What is miles per pound?

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 13 - 20 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.

View mpg & specs for any version

The Arnage has depreciated slightly more than its less commonplace Rolls-Royce Silver Seraph cousin (discontinued in 2003), but prices have not plummeted in the way its predecessor’s did. Whether you choose the BMW-sourced engine or the 6.75-litre V8, the Arnage gobbles fuel, with a combined economy of 16mpg for the 4.4 and just 14mpg for the larger engine.

On top of this, insurance is steep thanks to the cost of repairs and servicing is costly but necessary at either an official Bentley dealer or recognised specialist. Scheduled service stops come every 6000 miles.

The Arnage performs miserably on the eco front. With an average of 474g/km CO2 across the range, its emissions are extremely high. The line-up does not feature any diesel models and is very thirsty, averaging 15mpg.

There are no particular concerns with the Arnage. Both engines are understressed and coupled to gearboxes that easily cope with their power. The only trouble spots have been on the front suspension, with worn ball joints, but Bentley cured this with a recall to fit an uprated part. With proper servicing, an Arnage should be a faithful family retainer.