Which charges faster, the BYD Seal or the Hyundai Ioniq 6?

On DC fast charging the Hyundai Ioniq 6 is far quicker, and the gap is dramatic. Its 800V E-GMP architecture holds a very high charging power through the mid-range, so a 10% to 80% session finishes in a very short time relative to any 400V electric sedan in Indonesia, including the Seal. The BYD Seal has a much more modest DC peak and its 10% to 80% session runs several times longer. On home AC charging the two are close, and most owners in Indonesia will charge overnight with a similar routine. Exact charging times are on this site's comparison tool and per-car pages.

Which one has more range?

The answer is not as simple as the brochure. The BYD Seal has a large NEDC claim and a larger battery, but NEDC is an optimistic test standard. The Hyundai Ioniq 6 has a smaller WLTP claim on paper, but WLTP is stricter and closer to reality, plus its very aerodynamic shape supports high efficiency. Once both are discounted to realistic estimates, the range closes significantly versus the impression the raw numbers give. For a fair range comparison in Indonesia, use the side-by-side realistic figures on this site's comparison tool and per-car pages.

Which is cheaper to charge?

Charging cost depends mainly on battery capacity and the electricity rate used, not on the brand. The BYD Seal has a larger battery than the Hyundai Ioniq 6, so charging from 20% to 80% on the Seal puts more energy in and costs a little more at the same rate. That said, the larger Seal also covers more kilometres per charge, so the cost per kilometre between the two can land fairly close. The small gap also swings depending on whether you charge at home or on DC fast charging. For exact side-by-side figures in Indonesia, use the comparison tool on this site.

BYD Seal vs Hyundai Ioniq 6: Electric Sedan Comparison in Indonesia

The BYD Seal and the Hyundai Ioniq 6 are two premium electric vehicles (battery electric vehicle / BEV) sitting at a comparable price tier in Indonesia, yet they answer very different questions. The Seal uses a 400V architecture with a larger LFP Blade battery and an NEDC range claim. The Ioniq 6 uses an 800V E-GMP architecture with a smaller NMC battery and a WLTP range claim. This architectural split is not just an engineering preference: it shapes daily charging habits, the rhythm at a rest stop, and who each car genuinely suits. This guide weighs the two qualitatively. The exact figures (cost, time, and realistic range side by side) are on this site's comparison tool and per-car pages.

By mht-dev, Frontend Engineer & Creator

A frontend engineer who bought a first electric car in March 2026 and built EV Charge Calculator while working out the real cost of charging it, writing every guide from an everyday new EV owner's perspective.

Two premium sedans, two architectures

The Seal and the Ioniq 6 target the same buyer: a premium electric sedan shopper who wants a low-slung, quiet, sporty driving position without stepping up to a European luxury tier. Both are pure BEVs (not hybrids), so they run entirely on electricity and never need petrol. That is where the overlap ends. The Seal sits on a 400V platform, like the majority of BEVs sold in Indonesia today. The Ioniq 6 sits on E-GMP, one of the few 800V platforms on sale in Indonesia, an architecture built specifically to support very high DC fast-charging power.

The chemistry follows the architectural line. The Seal uses LFP (lithium iron phosphate) in BYD's Blade format, the larger battery of the two, robust, and able to take routine full charges to 100% without undue worry. The Ioniq 6 uses NMC (nickel manganese cobalt) in a smaller but energy-dense pack, a chemistry that is kinder to long-term health if your daily habit is to top up to about 80% to 90% rather than always to 100%. This sounds technical, but the consequence is very practical: how you charge the Seal in the garage every night is not the same as the best way to charge the Ioniq 6.

DC fast-charging speed

DC fast charging is where the two cars differ most dramatically, and it is the Ioniq 6's clearest advantage. Its 800V E-GMP architecture holds a very high charging power through the mid-range, so a top-up from nearly empty to most of the battery at a fast-charging station finishes far sooner than almost any other BEV sold in Indonesia, including the Seal. The gap is not five or ten minutes; it is a chasm that shows up on every long trip.

The BYD Seal has a far more modest DC peak and holds roughly that level up to around 80%, behaviour typical of a large LFP pack. Its fast-charging sessions for the same span run noticeably longer than the Ioniq 6's, though still in line with most other 400V electric sedans on sale. For an owner who frequently travels long distances, that difference translates into real time spent at a rest stop on every trip. For an owner who mostly charges at home, the difference is rarely encountered.

At home the story is much closer and more relevant for most owners in Indonesia. Both use mid-power onboard AC chargers that take the battery from low to full overnight. For an owner who parks in the garage every night, the daily routine feels similar, and the Ioniq 6's DC advantage only shows itself when leaving town.

Range, battery capacity, and test standards

Comparing the two sedans' range requires care, because the brochure numbers are not apple-to-apple. The BYD Seal advertises range on the NEDC cycle, a test standard known to be optimistic and now retired in many markets. The Hyundai Ioniq 6 advertises range on the WLTP cycle, a stricter standard closer to real-world use. As a result, the Seal's large NEDC figure looks far longer than the Ioniq 6's WLTP figure, when in fact, once each is discounted back to a realistic estimate, the two close up significantly.

Worth noting too: the Seal carries a larger battery than the Ioniq 6. That partly explains why its NEDC figure can look so big, but LFP is typically slightly less energy-dense than NMC, so it is not automatic that the Seal will travel further in the real world. The efficiency gap (kWh per 100 km) at Indonesia highway speeds is a second factor, and the Ioniq 6's very aerodynamic shape works in its favour here.

That is why a fair range comparison should lean on realistic estimates rather than the raw claim. This site lays both out side by side with realistic-range figures already discounted from each manufacturer's claim according to its own test standard, the most honest way to judge which actually travels further in daily use in Indonesia.

Which one suits you?

Both are very mature premium electric sedans, so there is no wrong choice. Based on the direction of their specs: pick the Hyundai Ioniq 6 if out-of-town travel is a routine part of life, if you frequently rely on highway fast-charging stations, and if you are comfortable making about 80% to 90% your daily default instead of always 100%. Its 800V architecture will substantially change the rhythm of long trips, and the NMC chemistry will age well if treated with a gentle daily ceiling.

Pick the BYD Seal if most of your charging happens at home, if you want the larger battery and the relaxed LFP chemistry (charging to 100% every night is a legitimate habit), and if your DC fast-charging needs are less frequent. You give up the DC speed chasm that is the Ioniq 6's signature, but you gain the peace of mind of LFP battery care and BYD's broadly proven sedan package in Indonesia.

To close the decision with real numbers, this site provides a comparison tool prefilled with the BYD Seal Premium and the Hyundai Ioniq 6 Signature side by side, a per-car page for each, and a charging cost calculator that works it out with your own electricity tariff and battery percentage.

Frequently asked questions

Which charges faster, the BYD Seal or the Hyundai Ioniq 6?: On DC fast charging the Hyundai Ioniq 6 is far quicker, and the gap is dramatic. Its 800V E-GMP architecture holds a very high charging power through the mid-range, so a 10% to 80% session finishes in a very short time relative to any 400V electric sedan in Indonesia, including the Seal. The BYD Seal has a much more modest DC peak and its 10% to 80% session runs several times longer. On home AC charging the two are close, and most owners in Indonesia will charge overnight with a similar routine. Exact charging times are on this site's comparison tool and per-car pages.
Which one has more range?: The answer is not as simple as the brochure. The BYD Seal has a large NEDC claim and a larger battery, but NEDC is an optimistic test standard. The Hyundai Ioniq 6 has a smaller WLTP claim on paper, but WLTP is stricter and closer to reality, plus its very aerodynamic shape supports high efficiency. Once both are discounted to realistic estimates, the range closes significantly versus the impression the raw numbers give. For a fair range comparison in Indonesia, use the side-by-side realistic figures on this site's comparison tool and per-car pages.
Which is cheaper to charge?: Charging cost depends mainly on battery capacity and the electricity rate used, not on the brand. The BYD Seal has a larger battery than the Hyundai Ioniq 6, so charging from 20% to 80% on the Seal puts more energy in and costs a little more at the same rate. That said, the larger Seal also covers more kilometres per charge, so the cost per kilometre between the two can land fairly close. The small gap also swings depending on whether you charge at home or on DC fast charging. For exact side-by-side figures in Indonesia, use the comparison tool on this site.