2018 Bentley Continental GT Convertible — Full Specifications
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The 2018 Bentley Continental GT Convertible is a coupe powered by a 6L 12-cyl turbo premium gasoline engine. It returns around 17 mpg (UK) / 14 mpg (US EPA) combined. Owners often keep a Bentley Continental GT Convertible workshop manual to hand for servicing and repairs.
Compared with the 2017 Bentley Continental GT Convertible: Fuel economy slips from 19 to 17 mpg (UK) combined on the most efficient configuration. No longer listed: 4L 8-cyl turbo.
Full Specifications
| Engine | 6L 12-cyl turbo |
|---|---|
| Transmission | Automatic (S8) |
| Fuel Type | Premium Gasoline |
| Powertrain | Conventional |
| Drive | All-Wheel Drive |
| Body Style | Coupe |
| Passenger Volume (EPA) | 86 cu ft (2,435 L) |
| Luggage Volume (EPA) | 7 cu ft (198 L) |
| Fuel Economy (UK) | 17 combined / 14 urban / 24 extra-urban mpg |
| Fuel Economy (US EPA) | 14 combined / 12 city / 20 highway mpg |
| CO₂ Emissions | 390 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 Continental GT Convertible, all with the 6L 12-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 |
|---|---|---|---|---|---|---|
| 6L 12-cyl turbo | Automatic (S8) | All-Wheel Drive | 17 | 14 (12/20) | 390 | $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 86 cubic feet (about 2,435 litres) and luggage volume at 7 cubic feet (about 198 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 Continental GT Convertible
Running Costs: 2018 Bentley Continental GT Convertible
Covering around 8,000 miles a year in a 2018 Bentley Continental GT Convertible 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 Continental GT Convertible 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.
Recalls & Owner Complaints (NHTSA)
NHTSA lists no safety recall campaigns for the 2018 Bentley Continental GT Convertible as of 6 October 2026. Recalls can be issued years after a model is sold, so it is still worth checking your own VIN.
Owners have filed 1 complaint with NHTSA about the 2018 Bentley Continental GT Convertible. The most-reported areas are Wheels (1).
Used-buyer checklist for the 2018 Bentley Continental GT Convertible
Based on where NHTSA recalls and owner complaints cluster for this model year, these are the areas worth checking before you buy:
- Wheels (1 owner complaint) — Look for bent or cracked wheels and ask about any wheel recalls.
Source: US NHTSA recall and consumer-complaint databases, retrieved 6 October 2026. Complaints are unverified owner reports, not confirmed defects. Check any vehicle by VIN at nhtsa.gov/recalls, and see our guide to checking a used car for recalls.
How It Compares
How does the Bentley Continental GT Convertible compare to similar coupes? For context, coupes in our database average around 25 mpg (UK) combined — this model's 17 mpg figure is 8 mpg below that average. Its 390 g/km CO₂ figure is 112 g/km higher than the 278 g/km average for coupes on this site. This comparison is based on 1072 coupes in our dataset.
Bentley models in our database average about 19 mpg (UK) combined on their most efficient configuration; the 2018 Bentley Continental GT Convertible's 17 mpg is 2 mpg below that make average. Its 390 g/km CO₂ figure is 35 g/km higher than the 355 g/km Bentley average.
Of the 6 Bentley Continental GT Convertible model years we cover, the 2018 ranks 6th for combined fuel economy on its best configuration (17 mpg UK combined, against a high of 23 mpg). See every Bentley Continental GT Convertible 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 Continental GT Convertible
Frequently Asked Questions
What engine does the 2018 Bentley Continental GT Convertible have?
It's fitted with a 6L 12-cyl turbo premium gasoline engine, paired with a automatic (s8) transmission.
What is the fuel economy of the 2018 Bentley Continental GT Convertible?
The most efficient configuration returns around 17 mpg (UK) combined, or 14 mpg on the US EPA cycle.
How much does the 2018 Bentley Continental GT Convertible 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.
Does the 2018 Bentley Continental GT Convertible have any recalls?
NHTSA lists no safety recall campaigns for the 2018 Bentley Continental GT Convertible as of 6 October 2026. Recalls can be issued years after a model is sold, so it is still worth checking your own VIN.
What are the most common problems reported for the 2018 Bentley Continental GT Convertible?
Among the 1 owner complaints filed with NHTSA, the most-reported areas are Wheels (1 complaint). Complaints are unverified owner reports, not confirmed defects, and raw counts rise with how many cars were sold.
How much interior and luggage space does the 2018 Bentley Continental GT Convertible have?
EPA measures interior passenger volume at 86 cubic feet (about 2,435 litres) and luggage volume at 7 cubic feet (about 198 litres). These are US EPA interior-volume figures, which are measured differently from the UK boot-capacity numbers manufacturers quote.
Is the Bentley Continental GT Convertible's fuel economy good for a coupe?
It returns around 17 mpg (UK) combined, against a same-body-style average of roughly 25 mpg among the coupes we track.