How to Line Up Dolphin and MG4 Specs

A Dolphin versus MG4 comparison is a lining-up job, not a trophy. Both cars are compact battery-electric hatches with different packs and different official windows. This file uses first-party United Kingdom pages. BYD UK’s Dolphin page leads with 7 seconds to 62 mph, 201 horsepower, and up to 265 miles of WLTP combined range, still subject to final GB type approval. MG Motor UK’s 2026 MG4 note leads with named grades, a 338-mile WLTP combined line on Premium Extended Range, and a seven-year or 80,000-mile warranty. Headline miles are not twins. AutoCN will help you put labelled cells side by side. It will not invent a Dolphin UK list price the pages used here did not print.

BYD UK’s Dolphin table also repeats 150 kW, 99 mph, a Blade lithium-iron-phosphate battery, boot volume of 345 litres or 1,310 litres folded, and a 30 to 80 percent charge in 29 minutes on a 100 kW direct-current charger. MG’s MG4 EV product page ties the 338-mile line to a 77 kWh nickel-cobalt-manganese pack, prints 6.2 seconds to 62 mph for Premium Extended Range, 3.8 seconds and 435 PS for the 320 kW XPOWER, a 10 to 80 percent window of 25 minutes on a 150 kW charger for the 64 kWh Premium Long Range, and boot volume of 388 litres or 1,164 litres folded. Those sentences stay labelled. They are not a winner banner.

Put each number on a named trim before you compare

The fastest way to lie with this pair is to take Dolphin’s “up to 265 miles” and MG4’s “338 miles” and call that the comparison. The first is a BYD UK headline and table figure that the page still flags as subject to final GB type approval. The second is MG UK’s Premium Extended Range combined WLTP line, tied on the product page to a 77 kWh NCM pack. A 64 kWh MG4 Premium Long Range is a different row. An MG4 EV Urban Comfort Standard Range, on MG UK’s Urban page, is another row again: a 42.8 kWh front-wheel-drive car in that page’s table, with a separate 53.9 kWh long-range pair and a headline of up to 258 miles WLTP from the 53.9 kWh battery. If the quotation does not name the MG4 row, you do not yet have a comparison. You have two brochures.

BYD UK’s current Dolphin retail story, in the specification PDF cited for this article, uses Comfort and Design as grade names. Older or other-market Dolphin pages have used Essential, Boost, Active, or Premium. Do not drop an Australian Essential 70 kW line into a UK Comfort cell. The UK page used here leads with 150 kW and 201 horsepower, which is one power story, not every Dolphin ever built. If the VIN is a smaller-motor car, the 7-second and 265-mile headlines do not belong to it.

Charge windows are not the same question

Dolphin’s published rapid-charge sentence on the UK page is 30 to 80 percent in 29 minutes on a 100 kW direct-current charger. MG4’s published rapid-charge sentence on the current UK product page is 10 to 80 percent in 25 minutes on a 150 kW charger for the 64 kWh Premium Long Range. Those are different state-of-charge windows and different charger assumptions. You may put them on the same slide. You may not subtract 25 from 29 and declare a winner. MG’s Urban page uses yet another window: 10 to 80 percent in 28 minutes for the Comfort Standard Range on a 150 kW charger. Write the window on every cell.

A comparison table that refuses to pick a champion

Use the table as a lining-up tool. Empty cells are honest. Filled cells that mix markets are not.

What the table still cannot decide

It cannot decide ride, noise, or a workshop hour in your town. It cannot decide whether Dolphin’s Euro NCAP five-star sentence, which BYD UK reprints, outranks MG’s six-airbag and MG Pilot story. Star tests and brochure assistance lists are different documents, often from different years. Put the test date next to any star. This article will not crown a safer hatch.

It cannot decide software. BYD UK lists 4G connected services, over-the-air updates, Android Auto, Apple CarPlay, and NFC keyless entry by card or iPhone on the Dolphin page. MG UK lists a 12.8-inch screen, a 10.25-inch driver display, wireless Apple CarPlay and Android Auto, and MG Pilot Custom on the current MG4 EV page. Account regions still win. A car that will not take the buyer’s phone region is the wrong car, regardless of litres.

It cannot decide heat pumps. MG UK’s Urban page says a heat pump is standard on that Urban story. The Dolphin UK page used here does not, in the passages cited, make a heat-pump claim. Ask the VIN. Do not copy a heat pump onto Dolphin because another BYD car has one.

Price discipline when only one side printed pounds

MG Motor UK’s media note prints Urban Comfort Standard Range from £23,495, Comfort Long Range from £25,495, Urban Premium Long Range from £27,995, then MY26 Premium Long Range from £29,995, Premium Extended Range from £32,995, and XPOWER from £33,995. Those are UK retail starting prices in that note, not transaction prices and not export quotes. BYD UK’s Dolphin product page used here tells the reader to see the latest prices and does not print an on-the-road number in the specification table. A later BYD UK finance page advertised a dated 0 percent APR conditional-sale window on Dolphin models without reprinting the cash price in the text retrieved for this article. Leave the Dolphin cash cell blank until a configurator, a retailer quote, or a first-party price page fills it. A comparison that invents a Dolphin price to sit next to £29,995 is a fabrication. AutoCN will not finish that cell.

Export buyers need a third column

A China-yard Dolphin or MG4 twin can differ in inlet, lamp, radio, and pack option. Add a third column for the VIN. Copy UK headline figures only into the UK column. Photograph the inlet. Read the energy label. Ask whether the car is left-hand drive or right-hand drive. Destination approval is a regulator sentence, not a hatch comparison. AutoCN’s information centre can hold the empty approval cell. It cannot fill it.

A lining-up checklist you can reuse on the next pair

Name both trims. Name both cycles. Name both charge windows, including the state-of-charge band. Name pack energy and chemistry separately. Name seats-up litres and folded litres separately. Name the date of each page. Refuse any cell that required a conversion between WLTP, CLTC, or EPA. Refuse any cell that required a guessed price. Then decide whether the brief needs seats-up litres, folded litres, a long official combined line, a dual-motor row, or a published V2L figure. Those are brief filters. They are not a magazine score.

If you need more than two nameplates, do not widen this table with a third brand until that brand has the same columns filled from first-party pages. A half-filled third column will drag the honest empty Dolphin price cell into looking like a defect. It is not a defect. It is missing evidence.

Frequently Asked Questions

Which car has more official range, Dolphin or MG4?

On the UK pages used here, MG4 Premium Extended Range is published at 338 miles WLTP combined, while Dolphin is published at up to 265 miles WLTP combined and still flagged as subject to final GB type approval. That is not a pack-matched result. An MG4 Urban 53.9 kWh headline of up to 258 miles sits much closer to the Dolphin headline. Name the MG4 row before you answer.

Is the MG4 faster than the Dolphin?

XPOWER’s 3.8-second and 320 kW lines are not a comparison with Dolphin’s 7-second, 150 kW UK headline. Premium Extended Range at 6.2 seconds is the closer MG4 row to a single-motor hatch brief, and even that row is a different pack. Time the VIN if you need a measured sprint. This page will not invent one.

Which boot should I use in the brief?

Use 345 litres for Dolphin seats-up and 388 litres for the MG4 EV page seats-up if those cars match the pages. Use 1,310 versus 1,164 only if the brief is a folded-rear job. A larger folded number does not help a buyer who never folds the seats. Measure the object, then pick the column.

Why will this article not name a cheaper car?

Because the Dolphin UK cash price was not printed on the product page used here, and MG’s pounds are UK retail starting prices in a media note. A cheaper-car sentence would require an invented Dolphin figure or a forgotten tax. Ask for two dated quotes instead.

Can I treat Euro NCAP five stars as the deciding spec?

No. BYD UK reprints a five-star Dolphin result. That is a dated test document, not a 2026 spec sheet and not an MG4 test. If the brief needs a star rating, read the test year and the tested variant. Do not award a comparison on a logo.

Leave the trophy off the slide

The honest Dolphin and MG4 slide has named trims, named cycles, named charge windows, named litres, one filled UK price column, one empty Dolphin cash cell, and no winner banner. The 265-mile and 338-mile headlines can sit side by side if you keep their conditions. They cannot sit in a single sentence that says one hatch beats the other. AutoCN’s reviews and BYD brand route can store the slide. Use contact when you need the empty cells labelled, not when you want a ranking that the sheets do not support.