BYD Seal 6 DM-i vs Hyundai Sonata

Key differences

  • BYD Seal 6 DM-i is 70 mm (2.8 in) shorter than Hyundai Sonata but has 49 L more cargo space.BYD Seal 6 DM-i is 70 mm (2.8 in) shorter than Hyundai Sonata but has 49 L (1.7 cu ft) more cargo space.
  • Hyundai Sonata makes 7 kW (10 hp) more power than BYD Seal 6 DM-i.
Gas

BYD Seal 6 DM-i

Sedan · 2026 · PHEV

£34,020 incl. tax

€37,000 incl. tax

€38,200 incl. tax

€37,490 incl. tax

No price listed for United States yet.

No price listed for Canada yet.

No price listed for Australia yet.

No price listed for Germany yet.

No price listed for Netherlands yet.

No price listed for Norway yet.

No price listed for France yet.

No price listed for Belgium yet.

No price listed for Austria yet.

No price listed for Sweden yet.

No price listed for Denmark yet.

No price listed for Switzerland yet.

Full specifications of BYD Seal 6 DM-i
Gas

Hyundai Sonata

Sedan · 2026 · ICE

US$27,450 excl. tax

No price listed for Canada yet.

No price listed for United Kingdom yet.

No price listed for Australia yet.

No price listed for Germany yet.

No price listed for Netherlands yet.

No price listed for Norway yet.

No price listed for France yet.

No price listed for Spain yet.

No price listed for Italy yet.

No price listed for Belgium yet.

No price listed for Austria yet.

No price listed for Ireland yet.

No price listed for Sweden yet.

No price listed for Denmark yet.

No price listed for Switzerland yet.

Full specifications of Hyundai Sonata

Size comparison

Side view size comparison of BYD Seal 6 DM-i and Hyundai Sonata
  • Hyundai Sonata is 70 mm (2.8 in) longer than BYD Seal 6 DM-i.
  • Hyundai Sonata is 50 mm (2 in) lower than BYD Seal 6 DM-i.
  • Hyundai Sonata has a wheelbase 50 mm (2 in) longer than BYD Seal 6 DM-i.
Blue solid line: BYD Seal 6 DM-i; orange dashed line: Hyundai Sonata. The outlines are generic body shapes drawn at one scale, not the real design of any model.

BYD Seal 6 DM-i is 4,840 mm (190.6 in) long and 1,495 mm (58.9 in) high, with a wheelbase of 2,790 mm (109.8 in). Hyundai Sonata is 4,910 mm (193.3 in) long and 1,445 mm (56.9 in) high, with a wheelbase of 2,840 mm (111.8 in).

Front view size comparison of BYD Seal 6 DM-i and Hyundai Sonata
  • Hyundai Sonata is 16 mm (0.6 in) narrower than BYD Seal 6 DM-i.
Blue solid line: BYD Seal 6 DM-i; orange dashed line: Hyundai Sonata.

BYD Seal 6 DM-i is 1,875 mm (73.8 in) wide and 1,495 mm (58.9 in) high. Hyundai Sonata is 1,859 mm (73.2 in) wide and 1,445 mm (56.9 in) high.

Rear view size comparison of BYD Seal 6 DM-i and Hyundai Sonata
Blue solid line: BYD Seal 6 DM-i; orange dashed line: Hyundai Sonata.

BYD Seal 6 DM-i is 1,875 mm (73.8 in) wide and 1,495 mm (58.9 in) high. Hyundai Sonata is 1,859 mm (73.2 in) wide and 1,445 mm (56.9 in) high.

Compare specifications

A check mark shows the better value in a row. Range and efficiency check marks compare only values from the same test cycle. Prices are each market's own list prices, compared within that market; some include tax and some do not, and no price is marked better when the tax treatment differs. Energy cost is what the energy for 100 km (100 mi where the market uses miles) costs at the market's latest published national energy price, in its own currency, with the price's source and date.

Specification comparison
Specification BYD Seal 6 DM-i Hyundai Sonata
Price
Base priceUnited States Not listed US$27,450excl. taxChecked . Source for United States, Hyundai Sonata
Base priceCanada Neither car has a price listed for Canada yet.
Base priceUnited Kingdom £34,020incl. taxChecked . Source for United Kingdom, BYD Seal 6 DM-i Not listed
Base priceAustralia Neither car has a price listed for Australia yet.
Base priceGermany Neither car has a price listed for Germany yet.
Base priceNetherlands Neither car has a price listed for Netherlands yet.
Base priceNorway Neither car has a price listed for Norway yet.
Base priceFrance Neither car has a price listed for France yet.
Base priceSpain €37,000incl. taxChecked . Source for Spain, BYD Seal 6 DM-i Not listed
Base priceItaly €38,200incl. taxChecked . Source for Italy, BYD Seal 6 DM-i Not listed
Base priceBelgium Neither car has a price listed for Belgium yet.
Base priceAustria Neither car has a price listed for Austria yet.
Base priceIreland €37,490incl. taxChecked . Source for Ireland, BYD Seal 6 DM-i Not listed
Base priceSweden Neither car has a price listed for Sweden yet.
Base priceDenmark Neither car has a price listed for Denmark yet.
Base priceSwitzerland Neither car has a price listed for Switzerland yet.
Energy cost
Energy cost per 100 miUnited States Not available US$13.48per 100 mi Gasoline at US$4.284 per US gallon, incl. tax, for 19 Oct 2026. EPA consumption. EIA Weekly Retail Gasoline and Diesel Prices for United States gasoline price
Energy cost per 100 kmCanada Not available CA$12.86per 100 km Petrol at CA$1.738 per litre, incl. tax, for 1 Aug 2026 to 31 Aug 2026. EPA consumption. Statistics Canada, table 18-10-0001-01 for Canada petrol price
Energy cost per 100 miUnited Kingdom Not available £20.87per 100 mi Petrol at £1.753 per litre, incl. tax, for 12 Oct 2026. EPA consumption. UK DESNZ weekly road fuel prices for United Kingdom petrol price
Energy cost per 100 kmAustralia Not available A$17.80per 100 km Petrol at A$2.405 per litre, incl. tax, for 5 Oct 2026 to 11 Oct 2026. EPA consumption. Australian Institute of Petroleum weekly reports for Australia petrol price
Energy cost per 100 kmGermany Not available €16.12per 100 km Petrol at €2.179 per litre, incl. tax, for 19 Oct 2026. EPA consumption. EU Weekly Oil Bulletin for Germany petrol price
Energy cost per 100 kmNetherlands Not available €17.69per 100 km Petrol at €2.391 per litre, incl. tax, for 19 Oct 2026. EPA consumption. EU Weekly Oil Bulletin for Netherlands petrol price
Energy cost per 100 kmNorway Not available NOK 143.71per 100 km Petrol at NOK 19.42 per litre, incl. tax, for 1 Aug 2026 to 31 Aug 2026. EPA consumption. Statistics Norway fuel prices (table 09654) for Norway petrol price
Energy cost per 100 kmFrance Not available €16.49per 100 km Petrol at €2.229 per litre, incl. tax, for 19 Oct 2026. EPA consumption. EU Weekly Oil Bulletin for France petrol price
Energy cost per 100 kmSpain Not available €13.18per 100 km Petrol at €1.78 per litre, incl. tax, for 19 Oct 2026. EPA consumption. EU Weekly Oil Bulletin for Spain petrol price
Energy cost per 100 kmItaly Not available €14.92per 100 km Petrol at €2.016 per litre, incl. tax, for 19 Oct 2026. EPA consumption. EU Weekly Oil Bulletin for Italy petrol price
Energy cost per 100 kmBelgium Not available €14.72per 100 km Petrol at €1.989 per litre, incl. tax, for 19 Oct 2026. EPA consumption. EU Weekly Oil Bulletin for Belgium petrol price
Energy cost per 100 kmAustria Not available €13.45per 100 km Petrol at €1.817 per litre, incl. tax, for 19 Oct 2026. EPA consumption. EU Weekly Oil Bulletin for Austria petrol price
Energy cost per 100 kmIreland Not available €14.58per 100 km Petrol at €1.971 per litre, incl. tax, for 19 Oct 2026. EPA consumption. EU Weekly Oil Bulletin for Ireland petrol price
Energy cost per 100 kmSweden Not available SEK 132.39per 100 km Petrol at SEK 17.89 per litre, incl. tax, for 26 Oct 2026. EPA consumption. Preem AB list prices for business customers (Företagskort) for Sweden petrol price
Energy cost per 100 kmDenmark Not available DKK 132.61per 100 km Petrol at DKK 17.92 per litre, incl. tax, for 1 May 2026 to 31 May 2026. EPA consumption. Energistyrelsen Prisdatabase (monthly energy prices, Blyfri 95 and Autodiesel) for Denmark petrol price
Energy cost per 100 kmSwitzerland Not available CHF 14.95per 100 km Petrol at CHF 2.02 per litre, incl. tax, for 1 Sep 2026 to 30 Sep 2026. EPA consumption. BFS LIK Durchschnittspreise für Energie und Treibstoffe (monthly) for Switzerland petrol price
Dimensions
Length 4,840 mm (190.6 in)4,910 mm (193.3 in)
Width 1,875 mm (73.8 in)1,859 mm (73.2 in)
Height 1,495 mm (58.9 in)1,445 mm (56.9 in)
Wheelbase 2,790 mm (109.8 in)2,840 mm (111.8 in)
Curb weight Not available 1,466 kg1,466 kg (3,232 lb)
Performance
Power 135 kW (181 hp)142 kW (191 hp)Better value on this metric
Torque Not available 245 Nm181 lb-ft (245 Nm)
Engine and fuel
Fuel use 102.3 mpg (WLTP)2.3 L/100 km (WLTP)122.8 mpg31.8 mpg7.4 L/100 km (EPA)38.2 mpg (EPA)
Fuel tank Not available 60.2 L
Engine size 1,498 cc2,500 cc
CO2 emissions 52 g/km Not available
Practicality
Seats 55
Cargo space 491 L491 L (17.3 cu ft)Better value on this metric442 L442 L (15.6 cu ft)

BYD Seal 6 DM-i

Specifications: Manufacturer official pages, cited per row, checked . www.byd.com www.byd.com

Source detailsBoost (UK leaflet column); https://www.byd.com/material/byd-site/byd-uk/specifications/SEAL%206%20DM-i%20UK%20Leaflet-v3.pdf -> length_mm "Length 4840 4840 Width 1875 1875 Width with extended exterior mirror 2102"; width_mm (same row) [plain Width row, without mirrors]; height_mm "Height 1495 1495"; wheelbase_mm "Wheelbase 2790 2790"; power_kw "System total max power (kW/PS) 135/184 156/212" [kW; system total]; fuel_consumption_l100km "Fuel Consumption - weighted combined (mpg) 122.8 188.3" [WLTP weighted combined]; co2g_per_km "CO emissions - combined (g/km) 52 34" [WLTP combined]; cargo_liters "Boot volume (L) 491 491" [seats up] | https://www.byd.com/it/news/anteprima-seal-6-dmi-e-seal-6-dmi-touring -> seats "Capacità abitacolo (posti) 5" [BYD Italia release 2 Sep 2025, saloon table (boot 491/1370)]. Exact factors: l/100km = 282.480936 / mpg (UK gallon).

Other specifications: Manufacturer official pages, cited per row, checked . www.byd.com

Source detailsFills an empty field only.

Hyundai Sonata

Specifications: Manufacturer official pages, cited per row, checked . www.hyundaiusa.com

Source detailsDrivetrain FWD (page rows: FWD Standard, AWD Not Available). Exact factors: in x 25.4; hp x 0.745699872; lb x 0.45359237; cu ft x 28.316846592; gal x 3.785411784; l/100km = 235.214583 / combined mpg.

Other specifications: Manufacturer official pages, cited per row, checked . www.hyundaiusa.com

Source detailsFills an empty field only.

Test cycles differ (WLTP and EPA), so these rows are not compared.

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