2018 Bentley Mulsanne — Full Specifications
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Running gear matters most — before anything else, UK: check tyre prices at TirendoUS: check wheel & tyre prices at WheelHero for this car's fitment.
The 2018 Bentley Mulsanne is a saloon/sedan powered by a 6.8L 8-cyl turbo premium gasoline engine. It returns around 17 mpg (UK) / 14 mpg (US EPA) combined. Owners often keep a Bentley Mulsanne workshop manual to hand for servicing and repairs.
Compared with the 2017 Bentley Mulsanne: Fuel economy is essentially unchanged at around 17 mpg (UK) combined. The engine line-up listed by EPA is unchanged.
Full Specifications
| Engine | 6.8L 8-cyl turbo |
|---|---|
| Transmission | Automatic (S8) |
| Fuel Type | Premium Gasoline |
| Powertrain | Conventional |
| Drive | Rear-Wheel Drive |
| Body Style | Saloon/Sedan |
| Passenger Volume (EPA) | 101 cu ft (2,860 L) |
| Luggage Volume (EPA) | 11 cu ft (311 L) |
| Fuel Economy (UK) | 17 combined / 13 urban / 22 extra-urban mpg |
| Fuel Economy (US EPA) | 14 combined / 11 city / 18 highway mpg |
| CO₂ Emissions | 405 g/km |
| EPA Greenhouse Gas Score | 1 / 10 (10 = lowest emissions) |
| EPA Est. Annual Fuel Cost | $5,850 (15,000 mi/yr, US prices) |
Engine & Transmission Options
EPA lists 1 configuration for the 2018 Bentley Mulsanne, all with the 6.8L 8-cyl turbo engine. The headline figures at the top of this page describe the most fuel-efficient configuration.
| Engine | Transmission | Drive | MPG (UK) | MPG (US) | CO₂ g/km | Fuel cost / yr |
|---|---|---|---|---|---|---|
| 6.8L 8-cyl turbo | Automatic (S8) | Rear-Wheel Drive | 17 | 14 (11/18) | 405 | $5,850 |
MPG (US) shows combined, with city/highway in brackets. Highlighted row = the configuration used for the headline figures. Source: US EPA fueleconomy.gov.
EPA measures interior passenger volume at 101 cubic feet (about 2,860 litres) and luggage volume at 11 cubic feet (about 311 litres). These are US EPA interior-volume figures; they are measured differently from the boot capacity numbers UK manufacturers quote.
Owner Essentials for the 2018 Bentley Mulsanne
Running Costs: 2018 Bentley Mulsanne
Covering around 8,000 miles a year in a 2018 Bentley Mulsanne at 17 mpg combined, expect roughly 2,139 litres of fuel annually — multiply by your local price per litre for a cost estimate. For US owners, the EPA estimates about $5,850 a year in fuel for the most efficient configuration (15,000 miles, national average prices). Work out exact fuel costs with the fuel cost calculator on 247Calculators.
Convert between MPG and L/100km with the unit converters on 247QuickTools. Not sure what tyre size fits? 247TyreCheck explains tyre sizing.
Only need this car occasionally? See our buy vs rent comparison.
2018 Bentley Mulsanne Safety Ratings (NHTSA)
No NHTSA crash-test rating is on record for this model year. The NHTSA rates only a subset of vehicles each year; you can browse every rated vehicle on our NHTSA Safety Ratings hub.
How It Compares
Bentley models in our database average about 19 mpg (UK) combined on their most efficient configuration; the 2018 Bentley Mulsanne's 17 mpg is 2 mpg below that make average. Its 405 g/km CO₂ figure is 50 g/km higher than the 355 g/km Bentley average.
Of the 10 Bentley Mulsanne model years we cover, the 2018 is the most economical on its best configuration (17 mpg UK combined). See every Bentley Mulsanne year side by side.
Last updated: · Data: US EPA (fueleconomy.gov) and NHTSA safety ratings 18 July 2026; NHTSA recalls and complaints 6 October 2026; Wikidata & curated EU catalogue 18 July 2026; European generation and engine data from Wikipedia 7 October 2026
Vehicle data sourced from manufacturer specifications. Always verify with your vehicle handbook or a qualified mechanic. This is a reference tool, not professional advice.
Recommended Accessories for the 2018 Bentley Mulsanne
Frequently Asked Questions
What engine does the 2018 Bentley Mulsanne have?
It's fitted with a 6.8L 8-cyl turbo premium gasoline engine, paired with a automatic (s8) transmission.
What is the fuel economy of the 2018 Bentley Mulsanne?
The most efficient configuration returns around 17 mpg (UK) combined, or 14 mpg on the US EPA cycle.
How much does the 2018 Bentley Mulsanne cost to fuel per year?
The US EPA estimates about $5,850 a year in fuel for the most efficient configuration, based on 15,000 miles of mixed driving and national average fuel prices. Your own cost will depend on mileage and local prices.
How much interior and luggage space does the 2018 Bentley Mulsanne have?
EPA measures interior passenger volume at 101 cubic feet (about 2,860 litres) and luggage volume at 11 cubic feet (about 311 litres). These are US EPA interior-volume figures, which are measured differently from the UK boot-capacity numbers manufacturers quote.