Cadillac Optiq is 41 mm (1.6 in) longer than BYD Song Plus.
Cadillac Optiq is 17 mm (0.7 in) lower than BYD Song Plus.
Cadillac Optiq has a wheelbase 181 mm (7.1 in) longer than BYD Song Plus.
Blue solid line: BYD Song Plus; orange dashed line: Cadillac Optiq.The outlines are generic body shapes drawn at one scale, not the real design of any model.
BYD Song Plus is 4,785 mm (188.4 in) long and 1,660 mm (65.4 in) high, with a wheelbase of 2,765 mm (108.9 in). Cadillac Optiq is 4,826 mm (190 in) long and 1,643 mm (64.7 in) high, with a wheelbase of 2,946 mm (116 in).
Cadillac Optiq is 23 mm (0.9 in) wider than BYD Song Plus.
Blue solid line: BYD Song Plus; orange dashed line: Cadillac Optiq.
BYD Song Plus is 1,890 mm (74.4 in) wide and 1,660 mm (65.4 in) high. Cadillac Optiq is 1,913 mm (75.3 in) wide and 1,643 mm (64.7 in) high.
Blue solid line: BYD Song Plus; orange dashed line: Cadillac Optiq.
BYD Song Plus is 1,890 mm (74.4 in) wide and 1,660 mm (65.4 in) high. Cadillac Optiq is 1,913 mm (75.3 in) wide and 1,643 mm (64.7 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.
CA$1.99per 100 kmDerivedElectricity at CA$0.12 per kWh, excl. tax, for 1 Jan 2025 to 31 Dec 2025. Derived: usable battery divided by rated range, from the EPA range. It is battery to wheels, so it is usually lower than an official figure. Statistics Canada, table 25-10-0021-01 for Canada electricity price
NOK 37.11per 100 kmDerivedElectricity at NOK 2.226 per kWh, incl. tax, for 1 Jan 2026 to 30 Jun 2026. Derived: usable battery divided by rated range, from the EPA range. It is battery to wheels, so it is usually lower than an official figure. Eurostat household electricity prices (nrg_pc_204) for Norway electricity price
€4.18per 100 kmDerivedElectricity at €0.251 per kWh, incl. tax, for 1 Jan 2026 to 30 Jun 2026. Derived: usable battery divided by rated range, from the EPA range. It is battery to wheels, so it is usually lower than an official figure. Eurostat household electricity prices (nrg_pc_204) for Spain electricity price
€5.24per 100 kmDerivedElectricity at €0.314 per kWh, incl. tax, for 1 Jan 2026 to 30 Jun 2026. Derived: usable battery divided by rated range, from the EPA range. It is battery to wheels, so it is usually lower than an official figure. Eurostat household electricity prices (nrg_pc_204) for Italy electricity price
SEK 55.07per 100 kmDerivedElectricity at SEK 3.304 per kWh, incl. tax, for 1 Jan 2026 to 30 Jun 2026. Derived: usable battery divided by rated range, from the EPA range. It is battery to wheels, so it is usually lower than an official figure. Eurostat household electricity prices (nrg_pc_204) for Sweden electricity price
DKK 29.59per 100 kmDerivedElectricity at DKK 1.775 per kWh, incl. tax, for 1 Jan 2026 to 30 Jun 2026. Derived: usable battery divided by rated range, from the EPA range. It is battery to wheels, so it is usually lower than an official figure. Eurostat household electricity prices (nrg_pc_204) for Denmark electricity price
Source detailsOpenEV Data v1.24.0 (generated 2025-12-30); record byd:song_plus:2025:song_plus; sources: oem "BYD Europe - Seal U (Song Plus)" https://www.byd.com/eu/car/sealu (accessed 2025-12-28); cargo method not stated by the source
Range and efficiency: ADAC Autodatenbank (manufacturer WLTP figures), checked . www.adac.de