1. Why This is the Most Important Budget EV Battle of 2026

For buyers looking to join the electric revolution without spending £40,000+, two cars keep rising to the top of every shortlist: the MG4 Electric and the BYD Dolphin. Both start under £27,000. Both carry 5-star Euro NCAP ratings. Both come from Chinese automotive manufacturers with serious engineering pedigree. And both offer a level of equipment and performance that simply has no equivalent in European or Korean alternatives at the same price.

The MG4 and BYD Dolphin are often pitched as interchangeable alternatives to budget-conscious buyers. They are not. Despite occupying near-identical price points, they are quite different cars with meaningfully different strengths — and the right choice depends entirely on what you prioritise in day-to-day ownership.

This is the definitive, data-driven comparison. We’ve examined every dimension that matters to real buyers: range, charging speed, interior quality, driving dynamics, practicality, safety, running costs, and long-term ownership confidence. The answers are sometimes surprising.

For the full library of reviews and buyer guides covering both models and more, visit ChineseCars.Asia.

2. Full Specification Comparison

3. Price & Variants

The pricing of these two cars is where the comparison begins and, for many buyers, nearly ends. Both sit in the same bracket that was previously impossible for a genuinely good new electric car.

The BYD Dolphin undercuts the MG4 by £500–£2,500 depending on configuration. However, the most popular MG4 Long Range at £30,495 — the variant most buyers actually choose — costs £2,500 more than the equivalent Dolphin Extended Range but brings a significantly larger battery (64 kWh vs 44.9 kWh) and faster charging. The extra money buys you meaningfully more capability, not just a badge.

4. Design & Exterior

MG4 Electric

The MG4’s design is clean, modern, and deliberately understated. The low-slung hatchback silhouette references classic European hot hatch proportions, giving it a more dynamic profile than most EVs at this price. The closed-off front grille, full-width LED rear light bar, and neat surfacing create a car that looks genuinely contemporary without trying too hard. It’s the safer design choice — likely to age better and offend fewer people.

BYD Dolphin

The BYD Dolphin takes a bolder approach. Its smooth, rounded forms are heavily influenced by marine design — curves everywhere, a characterful face with round DRL elements, and an overall shape that is unmistakably playful. BYD worked with a dedicated design team to create something with genuine personality rather than just acceptable aesthetics. The Dolphin’s design divides opinion more than the MG4’s — but it attracts appreciably more attention on the road.

5. Interior & Practicality

This is where the two cars differ most dramatically — and where buyer personalities genuinely split.

MG4 Interior

The MG4’s cabin is well-finished, functional, and modern. A 10.25-inch central touchscreen runs MG’s infotainment system with wireless Apple CarPlay and Android Auto integration as standard. The physical controls are well-placed and the layout is intuitive within minutes. Material quality is solid throughout — better than the price suggests, though some hard plastics are evident at lower door levels. The front seats are well-bolstered and supportive on longer journeys.

Rear seat space is genuinely generous — a direct benefit of the MG4’s long wheelbase relative to its body size. Three adults can be accommodated across the back. Boot space at 363 litres is competitive for the hatchback segment, with a flat floor thanks to the rear-wheel drive configuration’s packaging advantages.

BYD Dolphin Interior

The BYD Dolphin’s interior is smaller, more playful, and arguably more charming. The 12.8-inch rotating touchscreen — which pivots between portrait and landscape like the Atto 3’s — is the cabin centrepiece and draws immediate attention from anyone who sits in the car. It’s a genuinely delightful feature that makes the Dolphin feel more premium than its price tag.

Material quality is comparable to the MG4 overall, but the Dolphin’s designers have been more creative with the execution — the dashboard has a layered, sculptural quality that feels more intentional than the MG4’s flatter surfaces. The rear seat has adequate space for two adults but feels slightly tighter than the MG4 for three. Boot space is 345 litres — 18 litres less than the MG4.

6. Real-World Range

On paper the MG4 Long Range leads significantly — 456 km vs 427 km WLTP. But WLTP figures overstate real-world range. Here’s what real-world driving shows:

The MG4 leads on range in every scenario — a reflection of its significantly larger 64 kWh battery versus the Dolphin’s 44.9 kWh pack. The gap is most pronounced in winter, where LFP chemistry (Dolphin) loses proportionally more range than NMC (MG4). For buyers who regularly drive 200+ km in a single day or who live in colder climates, the MG4’s range advantage is a meaningful real-world differentiator.

7. Charging Speed

This is one of the sharpest differentiators between the two cars — and it overwhelmingly favours the MG4.

The MG4 charges at 117 kW DC peak — meaningfully faster than the Dolphin’s 88 kW. More importantly, the MG4 also supports 11 kW three-phase AC charging, which charges the battery in approximately 7 hours from a compatible wallbox. The Dolphin’s 7 kW single-phase AC charging takes approximately 6.5 hours for its smaller battery — broadly comparable in practice for overnight home charging, but slower at AC public charging points above 7 kW.

In practical terms: a motorway stop in the MG4 adds more range in 20 minutes than the same stop in the Dolphin. Over a year of ownership for a driver making regular 300+ km trips, the cumulative time saving is significant.

8. Driving Experience

This is where the MG4 separates itself most distinctively from not just the BYD Dolphin, but from virtually every other budget electric car currently on sale in Europe.

MG4 — A Rear-Wheel Drive Revelation

The MG4’s most remarkable engineering decision is its rear-wheel drive configuration — essentially unheard of at this price point in any segment. The result is a car that handles with a balance and dynamism that makes rivals feel fundamentally compromised. There’s a natural weight distribution, genuine steering feedback, and a composed, planted feel through corners that makes every journey engaging rather than merely functional.

The MG4 isn’t a sports car — but it’s a genuinely enjoyable one. Sport mode sharpens the throttle response, and the chassis rewards more demanding driving with confidence and poise that justify the “drivers’ car” label at its price point. It’s a car that makes you want to drive it.

BYD Dolphin — Comfortable Competence

The BYD Dolphin drives like a well-sorted, cheerful city car. The front-wheel drive setup and softer suspension tune prioritise comfort and ease over engagement. Around town it’s nimble and friendly; on longer motorway runs it’s stable and refined. But it doesn’t excite. The steering is light and somewhat artificial-feeling, the body roll is more pronounced than the MG4’s, and the overall experience is more appliance-like.

This isn’t necessarily a criticism — many buyers want exactly this. The Dolphin’s relaxed character suits urban environments and stress-free commuting beautifully. But if you have any desire to enjoy the act of driving, the MG4 is in an entirely different class.

9. Safety & Technology

Both cars carry 5-star Euro NCAP ratings — an achievement that should not be taken for granted at this price point. Here’s how the scores compare directly:

The safety scores are very close — MG4 leads narrowly on adult occupant protection and safety assist, while BYD Dolphin leads on vulnerable road user protection. The most meaningful differentiation here is the Dolphin’s Blade Battery fire safety advantage — LFP chemistry demonstrably reduces thermal runaway risk compared to NMC. For safety-conscious family buyers, this matters.

10. Running Costs & Warranty

The MG4’s 7-year vehicle warranty is the longest standard warranty of any car brand in the UK — a genuine and significant ownership confidence factor. BYD’s 6-year warranty is still industry-leading relative to European brands but falls short of MG’s benchmark. The battery warranty reverses this: BYD’s 8yr/160,000 km coverage slightly edges MG’s 8yr/150,000 km.

MG’s dealer network is the most extensive of any Chinese brand in Europe — over 150 UK dealerships with broad parts and service coverage. BYD’s UK network is rapidly expanding but still smaller. For buyers who want to be confident about aftersales support within easy distance of home, MG currently holds the advantage.

11. Full Category Scorecard

MG4 wins 8 of 13 categories. The Dolphin wins 5. The pattern is clear: MG4 dominates on driving capability, range, and charging; BYD Dolphin wins on interior appeal, ride comfort, and battery safety architecture.

12. Who Should Buy Which?

13. Final Verdict: Which Budget EV Wins?

These are two genuinely excellent budget electric cars that have raised the bar for what £27,000–£31,000 can buy in the EV market. Neither deserves a dismissive verdict — both earn their places at the top of the recommended list for their respective buyers.

For full individual reviews of both models, more head-to-head comparisons, and the complete guide to budget Chinese EVs in 2026, visit ChineseCars.Asia.