2018 Alfa Romeo 4C — 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 Alfa Romeo 4C is a coupe powered by a 1.8L 4-cyl turbo premium gasoline engine. It returns around 34 mpg (UK) / 28 mpg (US EPA) combined. Owners often keep a Alfa Romeo 4C workshop manual to hand for servicing and repairs.
Compared with the 2017 Alfa Romeo 4C: Fuel economy is essentially unchanged at around 34 mpg (UK) combined. The engine line-up listed by EPA is unchanged.
Full Specifications
| Engine | 1.8L 4-cyl turbo |
|---|---|
| Transmission | Automatic (AM6) |
| Fuel Type | Premium Gasoline |
| Powertrain | Conventional |
| Drive | Rear-Wheel Drive |
| Body Style | Coupe |
| Length | 3989 mm |
| Width | 1864 mm |
| Height | 1183 mm |
| Kerb Weight | 1020 kg |
| Fuel Economy (UK) | 34 combined / 29 urban / 41 extra-urban mpg |
| Fuel Economy (US EPA) | 28 combined / 24 city / 34 highway mpg |
| CO₂ Emissions | 197 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 1 configuration for the 2018 Alfa Romeo 4C, all with the 1.8L 4-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 |
|---|---|---|---|---|---|---|
| 1.8L 4-cyl turbo | Automatic (AM6) | Rear-Wheel Drive | 34 | 28 (24/34) | 197 | $2,950 |
MPG (US) shows combined, with city/highway in brackets. Highlighted row = the configuration used for the headline figures. Source: US EPA fueleconomy.gov.
Owner Essentials for the 2018 Alfa Romeo 4C
Running Costs: 2018 Alfa Romeo 4C
Covering around 8,000 miles a year in a 2018 Alfa Romeo 4C 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.
Only need this car occasionally? See our buy vs rent comparison.
2018 Alfa Romeo 4C 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
How does the Alfa Romeo 4C compare to similar coupes? For context, coupes in our database average around 25 mpg (UK) combined — this model's 34 mpg figure is 9 mpg better than that average. Its 197 g/km CO₂ figure is 81 g/km lower than the 278 g/km average for coupes on this site. This comparison is based on 1072 coupes in our dataset.
Alfa Romeo models in our database average about 32 mpg (UK) combined on their most efficient configuration; the 2018 Alfa Romeo 4C's 34 mpg is 2 mpg above that make average.
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 Alfa Romeo 4C
Frequently Asked Questions
What engine does the 2018 Alfa Romeo 4C have?
It's fitted with a 1.8L 4-cyl turbo premium gasoline engine, paired with a automatic (am6) transmission.
What is the fuel economy of the 2018 Alfa Romeo 4C?
The most efficient configuration returns around 34 mpg (UK) combined, or 28 mpg on the US EPA cycle.
How much does the 2018 Alfa Romeo 4C 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.
Is the Alfa Romeo 4C's fuel economy good for a coupe?
Yes — it returns around 34 mpg (UK) combined, against a same-body-style average of roughly 25 mpg among the coupes we track, making it one of the more efficient options in its class.