2020 Hyundai Sonata — Full Specifications
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The 2020 Hyundai Sonata is a saloon/sedan offered with 3 engines (1.6L 4-cyl turbo, 2L 4-cyl, 2.5L 4-cyl). Its most fuel-efficient configuration returns around 37 mpg (UK) / 31 mpg (US EPA) combined, with 37–56 mpg (UK) across all configurations. A hybrid version is also listed by EPA (2L 4-cyl), returning around 56 mpg (UK) combined. Owners often keep a Hyundai Sonata workshop manual to hand for servicing and repairs.
Compared with the 2019 Hyundai Sonata: Fuel economy is essentially unchanged at around 37 mpg (UK) combined. EPA lists new engine options for 2020: 2.5L 4-cyl. No longer listed: 2L 4-cyl turbo, 2.4L 4-cyl. It carries the same 5★ overall NHTSA rating. EPA passenger volume changes from 106 to 105 cu ft.
Full Specifications
| Engine (most efficient) | 1.6L 4-cyl turbo |
|---|---|
| Engine options | 1.6L 4-cyl turbo · 2L 4-cyl · 2.5L 4-cyl |
| Transmission (most efficient) | Automatic (S8) |
| Fuel Type | Regular Gasoline |
| Powertrain | Conventional |
| Drive | Front-Wheel Drive |
| Body Style | Saloon/Sedan |
| Passenger Volume (EPA) | 105 cu ft (2,973 L) |
| Luggage Volume (EPA) | 16 cu ft (453 L) |
| Fuel Economy (UK) | 37 combined / 32 urban / 43 extra-urban mpg |
| Fuel Economy (US EPA) | 31 combined / 27 city / 36 highway mpg |
| CO₂ Emissions | 181 g/km |
| EPA Greenhouse Gas Score | 7 / 10 (10 = lowest emissions) |
| EPA Est. Annual Fuel Cost | $2,150 (15,000 mi/yr, US prices) |
Engine & Transmission Options
EPA lists 3 configurations for the 2020 Hyundai Sonata across 3 engines (1.6L 4-cyl turbo, 2L 4-cyl, 2.5L 4-cyl). Combined fuel economy ranges from 31 to 47 mpg (US), or 37 to 56 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 |
|---|---|---|---|---|---|---|
| 1.6L 4-cyl turbo | Automatic (S8) | Front-Wheel Drive | 37 | 31 (27/36) | 181 | $2,150 |
| 2L 4-cyl (Hybrid) | Automatic (AM-S6) | Front-Wheel Drive | 56 | 47 (45/51) | 117 | $1,450 |
| 2.5L 4-cyl | Automatic (S8) | Front-Wheel Drive | 37 | 31 (27/37) | 182 | $2,150 |
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 105 cubic feet (about 2,973 litres) and luggage volume at 16 cubic feet (about 453 litres). These are US EPA interior-volume figures; they are measured differently from the boot capacity numbers UK manufacturers quote.
Owner Essentials for the 2020 Hyundai Sonata
Running Costs: 2020 Hyundai Sonata
Covering around 8,000 miles a year in a 2020 Hyundai Sonata at 37 mpg combined, expect roughly 983 litres of fuel annually — multiply by your local price per litre for a cost estimate. For US owners, the EPA estimates about $2,150 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.
2020 Hyundai Sonata Safety Ratings (NHTSA)
Recalls & Owner Complaints (NHTSA)
NHTSA lists 4 safety recall campaigns that include the 2020 Hyundai Sonata (as of 6 October 2026). Most affected areas: Fuel system (1), Latches/locks/linkages (1), Electrical system (1). A campaign often covers several model years or models, so check your own VIN to see whether your car is affected.
- Fuel system — campaign 25V796000, reported 18 November 2025. Risk: A melted fuel tank can leak, increasing the risk of a fire.
- Latches/locks/linkages — campaign 22V196000, reported 28 March 2022. Risk: A person inside the trunk compartment may become trapped, increasing their risk of injury.
- Electrical system — campaign 20V213000, reported 9 April 2020. Risk: Unintended vehicle movement increases the risk of a crash.
- Equipment — campaign 20V122000, reported 28 February 2020. Risk: The incorrect tire information may mislead the vehicle owner to install the wrong tire size, potentially affecting vehicle handling, increasing the risk of a crash.
Owners have filed 194 complaints with NHTSA about the 2020 Hyundai Sonata. The most-reported areas are Electrical system (46), Fuel/propulsion system (46), Engine (39). Complaints include 6 reported crashes, 1 reported fire, 5 reported injuries. That is well below the median of 345 complaints across the 17 Hyundai Sonata model years in our data.
Used-buyer checklist for the 2020 Hyundai Sonata
Based on where NHTSA recalls and owner complaints cluster for this model year, these are the areas worth checking before you buy:
- Fuel system (1 recall campaign · 46 owner complaints) — Ask whether any fuel-pump or fuel-system recalls were completed, and watch for hard starting or stalling.
- Electrical system (1 recall campaign · 46 owner complaints) — Test every switch, window, light and warning lamp on a test drive, and ask about battery or alternator replacements.
- Engine (39 owner complaints) — Listen for unusual noise on a cold start, check for warning lights and ask for the service records.
- Doors & latches (1 recall campaign) — Test every door, boot and bonnet latch and the central locking.
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
Hyundai models in our database average about 34 mpg (UK) combined on their most efficient configuration; the 2020 Hyundai Sonata's 37 mpg is 3 mpg above that make average. Its 181 g/km CO₂ figure is 26 g/km lower than the 207 g/km Hyundai average.
Of the 17 Hyundai Sonata model years we cover, the 2020 is the most economical on its best configuration (37 mpg UK combined). See every Hyundai Sonata 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 2020 Hyundai Sonata
Frequently Asked Questions
What engine does the 2020 Hyundai Sonata have?
EPA lists 3 engines for the 2020 Hyundai Sonata: 1.6L 4-cyl turbo, 2L 4-cyl, 2.5L 4-cyl. The most fuel-efficient configuration pairs the 1.6L 4-cyl turbo with a automatic (s8).
What is the fuel economy of the 2020 Hyundai Sonata?
The most efficient configuration returns around 37 mpg (UK) combined, or 31 mpg on the US EPA cycle. Across all configurations the UK combined figure runs from 37 to 56 mpg. The hybrid version returns around 56 mpg (UK) combined.
How much does the 2020 Hyundai Sonata cost to fuel per year?
The US EPA estimates about $2,150 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 2020 Hyundai Sonata have a good safety rating?
It holds an overall NHTSA rating of 5 stars, with 4 stars for frontal crash protection.
Does the 2020 Hyundai Sonata have any recalls?
NHTSA lists 4 safety recall campaigns that include the 2020 Hyundai Sonata (as of 6 October 2026). Most affected areas: Fuel system (1), Latches/locks/linkages (1), Electrical system (1). A campaign often covers several model years or models, so check your own VIN to see whether your car is affected.
What are the most common problems reported for the 2020 Hyundai Sonata?
Among the 194 owner complaints filed with NHTSA, the most-reported areas are Electrical system (46 complaints), Fuel/propulsion system (46 complaints), Engine (39 complaints). 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 2020 Hyundai Sonata have?
EPA measures interior passenger volume at 105 cubic feet (about 2,973 litres) and luggage volume at 16 cubic feet (about 453 litres). These are US EPA interior-volume figures, which are measured differently from the UK boot-capacity numbers manufacturers quote.