2018 MINI Cooper S Hardtop 4 door — Full Specifications
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The 2018 MINI Cooper S Hardtop 4 door is a hatchback powered by a 2L 4-cyl turbo premium gasoline engine. Its most fuel-efficient configuration returns around 34 mpg (UK) / 28 mpg (US EPA) combined, with 31–34 mpg (UK) across all configurations. Owners often keep a MINI Cooper S Hardtop 4 door workshop manual to hand for servicing and repairs.
Compared with the 2017 MINI Cooper S Hardtop 4 door: Fuel economy is essentially unchanged at around 34 mpg (UK) combined. The engine line-up listed by EPA is unchanged.
Full Specifications
| Engine | 2L 4-cyl turbo |
|---|---|
| Transmission | Automatic (S6) |
| Fuel Type | Premium Gasoline |
| Powertrain | Conventional |
| Drive | Front-Wheel Drive |
| Body Style | Hatchback |
| Passenger Volume (EPA) | 84 cu ft (2,379 L) |
| Luggage Volume (EPA) | 9 cu ft (255 L) |
| Fuel Economy (UK) | 34 combined / 30 urban / 38 extra-urban mpg |
| Fuel Economy (US EPA) | 28 combined / 25 city / 32 highway mpg |
| CO₂ Emissions | 196 g/km |
| EPA Greenhouse Gas Score | 6 / 10 (10 = lowest emissions) |
| EPA Est. Annual Fuel Cost | $2,950 (15,000 mi/yr, US prices) |
Engine & Transmission Options
EPA lists 2 configurations for the 2018 MINI Cooper S Hardtop 4 door, all with the 2L 4-cyl turbo engine. Combined fuel economy ranges from 26 to 28 mpg (US), or 31 to 34 mpg (UK), depending on engine, transmission and drive. 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 |
|---|---|---|---|---|---|---|
| 2L 4-cyl turbo | Automatic (S6) | Front-Wheel Drive | 34 | 28 (25/32) | 196 | $2,950 |
| 2L 4-cyl turbo | Manual 6-spd | Front-Wheel Drive | 31 | 26 (23/32) | 210 | $3,150 |
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 84 cubic feet (about 2,379 litres) and luggage volume at 9 cubic feet (about 255 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 MINI Cooper S Hardtop 4 door
Running Costs: 2018 MINI Cooper S Hardtop 4 door
Covering around 8,000 miles a year in a 2018 MINI Cooper S Hardtop 4 door at 34 mpg combined, expect roughly 1,070 litres of fuel annually — multiply by your local price per litre for a cost estimate. For US owners, the EPA estimates about $2,950 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.
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2018 MINI Cooper S Hardtop 4 door 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 MINI Cooper S Hardtop 4 door 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 6 complaints with NHTSA about the 2018 MINI Cooper S Hardtop 4 door. The most-reported areas are Electrical system (2), Air bags (2), Engine (1). Complaints include 3 reported crashes, 3 reported injuries.
Used-buyer checklist for the 2018 MINI Cooper S Hardtop 4 door
Based on where NHTSA recalls and owner complaints cluster for this model year, these are the areas worth checking before you buy:
- Electrical system (2 owner complaints) — Test every switch, window, light and warning lamp on a test drive, and ask about battery or alternator replacements.
- Air bags (2 owner complaints) — Confirm any air bag inflator or module recalls were completed — enter the VIN at nhtsa.gov/recalls.
- Engine (1 owner complaint) — Listen for unusual noise on a cold start, check for warning lights and ask for the service records.
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
At 34 mpg (UK) combined it sits close to the 34 mpg average for MINI models in our database.
Of the 10 MINI Cooper S Hardtop 4 door model years we cover, the 2018 ranks 7th for combined fuel economy on its best configuration (34 mpg UK combined, against a high of 38 mpg). See every MINI Cooper S Hardtop 4 door 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 MINI Cooper S Hardtop 4 door
Frequently Asked Questions
What engine does the 2018 MINI Cooper S Hardtop 4 door have?
It's fitted with a 2L 4-cyl turbo premium gasoline engine, paired with a automatic (s6) transmission.
What is the fuel economy of the 2018 MINI Cooper S Hardtop 4 door?
The most efficient configuration returns around 34 mpg (UK) combined, or 28 mpg on the US EPA cycle. Across all configurations the UK combined figure runs from 31 to 34 mpg.
How much does the 2018 MINI Cooper S Hardtop 4 door cost to fuel per year?
The US EPA estimates about $2,950 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 MINI Cooper S Hardtop 4 door have any recalls?
NHTSA lists no safety recall campaigns for the 2018 MINI Cooper S Hardtop 4 door 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 MINI Cooper S Hardtop 4 door?
Among the 6 owner complaints filed with NHTSA, the most-reported areas are Electrical system (2 complaints), Air bags (2 complaints), Engine (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 MINI Cooper S Hardtop 4 door have?
EPA measures interior passenger volume at 84 cubic feet (about 2,379 litres) and luggage volume at 9 cubic feet (about 255 litres). These are US EPA interior-volume figures, which are measured differently from the UK boot-capacity numbers manufacturers quote.