MG4 vs BYD Dolphin: Which Budget EV Wins in 2026?
For buyers ready 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 a 5-star Euro NCAP rating, and both come from Chinese manufacturers with serious engineering pedigree. Yet despite near-identical pricing, they are very different cars with very different strengths.
This updated 2026 comparison breaks down every dimension that matters to real owners — range, charging speed, interior quality, driving dynamics, practicality, safety and long-term ownership confidence — so you can decide which budget EV genuinely deserves your money.
The MG4 and BYD Dolphin are frequently pitched as interchangeable alternatives for budget-conscious shoppers. In practice, they are not. To make the differences easy to grasp before we dive into the data, the short video below summarises the head-to-head in just over a minute — a useful overview of how these two electric cars stack up on range, charging and everyday appeal.
With the quick overview in mind, let’s work through each category in detail. The verdict at the end is data-driven, but as you’ll see, the smarter choice depends heavily on how — and where — you actually drive.
Why This Budget EV Battle Matters in 2026
Only a few years ago, a genuinely good new electric car for under £30,000 simply did not exist. The arrival of the MG4 Electric and the BYD Dolphin changed that calculation overnight. Together they offer a level of equipment, range and performance that has no equivalent among European or Korean rivals at the same price — and that is precisely why they keep landing on the same shortlists.
Because they sit so close on price, many buyers assume the decision is a coin toss. It isn’t. The MG4 leans toward driving engagement, range and charging speed, while the Dolphin leans toward interior charm, ride comfort and battery safety. Understanding that split is the key to choosing the right car rather than simply the cheaper one.
Everyday Essentials for Budget EV Owners
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Type 2 to Type 2 Charging Cable (22kW, 5m)
Both the MG4 and Dolphin top up on the Type 2 standard, and many UK and European public posts are untethered. A TÜV-certified 32A cable covers home wallboxes and on-street chargers alike — an essential first buy for either car.
🛒 Check Price on Amazon4K Front & Rear Dash Cam
Whichever budget EV you pick, a dual-channel 4K dash cam with parking mode is cheap peace of mind — useful evidence for insurance claims and round-the-clock protection that some UK insurers now reward with a discount.
🛒 Check Price on AmazonFull Specification Comparison
Before the subjective impressions, here is how the two most popular configurations compare on paper — the MG4 Electric Long Range (64 kWh) against the BYD Dolphin Extended Range (44.9 kWh). These are the variants most UK and European buyers actually choose, and the most directly comparable for everyday use.
| Specification | MG4 Long Range | BYD Dolphin Extended |
|---|---|---|
| Battery Capacity | 64 kWh | 44.9 kWh |
| WLTP Range | 456 km | 427 km |
| 0–100 km/h | 7.9 sec | 7.0 sec |
| Drive Layout | Rear-wheel drive | Front-wheel drive |
| Power Output | 204 hp (150 kW) | 150 hp (111 kW) |
| DC Fast Charge (max) | 117 kW | 88 kW |
| 10–80% DC Charge Time | ~35 min | ~45 min |
| AC Home Charging | 11 kW (3-phase) | 7 kW (single-phase) |
| Boot Space | 363 L | 345 L |
| Kerb Weight | 1,655 kg | 1,920 kg |
| Battery Chemistry | NMC (Nickel) | LFP Blade |
| Vehicle Warranty | 7 yr / 150,000 km | 6 yr |
| Battery Warranty | 8 yr / 150,000 km | 8 yr / 160,000 km |
| Euro NCAP | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ |
Price and Variants
Pricing is where this comparison begins and, for many shoppers, very nearly ends. Both cars occupy a bracket that was previously impossible for a genuinely capable new electric car, but their line-ups are shaped differently.
| Variant | MG4 Electric | BYD Dolphin |
|---|---|---|
| Entry / Standard Range | £26,995 (51 kWh) | £26,495 (44.9 kWh) |
| Long Range / Extended | £30,495 (64 kWh) | £27,995 (44.9 kWh LR) |
| Trophy / Premium | £33,495 (64 kWh) | Not available |
| Performance (AWD) | £36,995 (XPower) | Not available |
The Dolphin undercuts the MG4 by roughly £500–£2,500 depending on configuration. Yet the popular MG4 Long Range, at £30,495, costs about £2,500 more than the equivalent Dolphin Extended Range while delivering a significantly larger battery and faster charging. In other words, the extra money buys measurably more capability — not just a different badge.
Design and Exterior Styling
MG4 Electric
The MG4’s design is clean, modern and deliberately understated. Its low-slung hatchback silhouette references classic European hot-hatch proportions, giving it a more dynamic profile than most EVs at this price. A closed-off front, full-width LED rear light bar and neat surfacing combine into a car that looks genuinely contemporary without trying too hard — the safer aesthetic that is likely to age well and offend few people.
BYD Dolphin
The Dolphin takes a bolder route. Its smooth, rounded forms draw on marine-inspired design, with a characterful face, round daytime running lights and an unmistakably cheerful shape. The result has genuine personality rather than mere acceptability. It divides opinion more than the MG4, but it also attracts noticeably more attention on the road — a feature many buyers actively want.
Interior and 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 with wireless Apple CarPlay and Android Auto as standard, and the layout becomes intuitive within minutes. Material quality is solid throughout — better than the price suggests — though some hard plastics appear lower in the doors. Crucially, rear-seat space is genuinely generous thanks to the long wheelbase, and the 363-litre boot benefits from a flat floor enabled by the rear-drive packaging.
BYD Dolphin Interior
The Dolphin’s interior is smaller but arguably more charming. Its 12.8-inch rotating touchscreen — which pivots between portrait and landscape — is the cabin centrepiece and draws immediate reactions from anyone who climbs in. The dashboard has a layered, sculptural quality that feels more intentional than the MG4’s flatter surfaces. Rear space is adequate for two adults but tighter for three, and the 345-litre boot trails the MG4 by 18 litres.
💡 Pro Tip: If you regularly carry rear passengers or bulky loads, the MG4’s longer effective wheelbase and larger boot make it the more practical family choice. If a delightful, design-led cabin matters most to you, the Dolphin’s rotating screen is hard to resist.
Real-World Range Comparison
On paper the MG4 Long Range leads with 456 km WLTP against the Dolphin’s 427 km. But WLTP figures flatter every EV, so real-world driving tells the more useful story. Across typical conditions, the MG4 maintains a consistent advantage.
| Driving Scenario | MG4 Long Range | BYD Dolphin Extended |
|---|---|---|
| City & Urban | ~410 km | ~390 km |
| Mixed Driving | ~355 km | ~330 km |
| Motorway at 110 km/h | ~290 km | ~265 km |
| Winter (0°C–5°C) | ~270 km | ~235 km |
The MG4 leads in every scenario, a direct reflection of its larger 64 kWh battery against the Dolphin’s 44.9 kWh pack. The gap is widest in winter, where the Dolphin’s LFP chemistry loses proportionally more range than the MG4’s NMC battery. For anyone who routinely covers 200+ km in a day, or lives in a colder climate, that range advantage becomes a meaningful real-world differentiator rather than a spec-sheet curiosity.
Charging Speed Head-to-Head
Charging is one of the sharpest differentiators between the two cars, and it overwhelmingly favours the MG4. The MG4 accepts up to 117 kW on DC fast chargers and supports 11 kW three-phase AC charging at home, while the Dolphin peaks at 88 kW DC and 7 kW single-phase AC.
| Charging Metric | MG4 Long Range | BYD Dolphin Extended |
|---|---|---|
| Peak DC Fast Charging | 117 kW | 88 kW |
| AC Home Charging (max) | 11 kW (3-phase) | 7 kW (single-phase) |
| 10–80% DC Charge Time | ~35 min | ~45 min |
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 regular long trips, that cumulative time saving is significant. Faster three-phase AC charging also benefits drivers with compatible home or workplace wallboxes, topping the battery up more quickly between journeys.
Driving Experience and Dynamics
MG4 — A Rear-Wheel-Drive Revelation
The MG4’s most remarkable engineering decision is its rear-wheel-drive layout — essentially unheard of at this price in any segment. The result is a car with natural weight distribution, genuine steering feedback and a composed, planted feel through corners that makes rivals feel compromised. It isn’t a sports car, but it is genuinely enjoyable; Sport mode sharpens the throttle, and the chassis rewards keener driving with confidence and poise that justify the “drivers’ car” label.
BYD Dolphin — Comfortable Competence
The Dolphin drives like a well-sorted, cheerful city car. Its front-wheel-drive setup and softer suspension prioritise comfort and ease over engagement. Around town it is nimble and friendly, and on the motorway it is stable and refined, but it doesn’t excite. The steering is light and a touch artificial, and body roll is more pronounced. For many buyers that relaxed, appliance-like character is exactly the point — but those who enjoy driving will find the MG4 in a different league.
Safety and Technology
Both cars earn full 5-star Euro NCAP ratings — no small achievement at this price. The MG4 edges ahead on adult occupant protection and safety assist, while the Dolphin scores higher for vulnerable road users. The most meaningful distinction lies in battery architecture.
| Safety Category | MG4 Electric | BYD Dolphin |
|---|---|---|
| Overall NCAP | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ |
| Adult Occupant | 84% | 82% |
| Child Occupant | 78% | 76% |
| Vulnerable Road Users | 74% | 77% |
| Safety Assist (ADAS) | 81% | 79% |
| Battery Fire Safety | NMC (standard risk) | LFP Blade (lower risk) |
⚠️ Important Note: The Dolphin’s LFP Blade battery has a demonstrably lower thermal-runaway risk than the MG4’s NMC chemistry. If battery fire safety is a top priority — especially for families — this is a genuine advantage worth weighing against the MG4’s range and charging lead.
Running Costs and Warranty
Ownership confidence is where the MG4 reasserts itself. Its 7-year vehicle warranty is the longest standard cover of any car brand in the UK, while BYD’s 6-year warranty remains strong relative to European rivals. The battery warranty reverses the order slightly, with BYD’s 8-year / 160,000 km coverage just edging MG’s 8-year / 150,000 km.
Dealer support also favours MG. Its network is the most extensive of any Chinese brand in Europe, with broad parts and service coverage, whereas BYD’s footprint — though expanding quickly — is still smaller. For buyers who value aftersales support close to home, MG currently holds the advantage.
Full Category Scorecard
Bringing the categories together produces a clear but nuanced picture. The MG4 wins on driving, range, charging, practicality, safety, warranty and dealer support; the Dolphin counters on value, interior tech, interior design, ride comfort and battery safety.
| Category | MG4 | Dolphin | Winner |
|---|---|---|---|
| Value for Money | 9.0 | 9.3 | Dolphin |
| Real-World Range | 8.8 | 8.0 | MG4 |
| DC Charging Speed | 8.5 | 7.2 | MG4 |
| Driving Dynamics | 9.2 | 7.5 | MG4 |
| Interior Tech | 8.0 | 8.8 | Dolphin |
| Interior Design | 7.8 | 8.5 | Dolphin |
| Ride Comfort | 7.8 | 8.2 | Dolphin |
| Practicality / Boot | 8.2 | 7.8 | MG4 |
| Safety Ratings | 8.4 | 8.2 | MG4 |
| Battery Safety | 7.8 | 9.0 | Dolphin |
| Warranty Coverage | 9.2 | 8.6 | MG4 |
| Dealer Network | 9.0 | 7.2 | MG4 |
| Overall Score | 8.6 | 8.2 | MG4 |
Who Should Buy Which?
Choose the MG4 Electric if…
- You enjoy driving and want the best dynamics available at this price.
- You regularly cover 200+ km a day or make frequent long trips.
- You want the fastest DC charging and 11 kW three-phase AC at home.
- You need the longest warranty and the widest dealer network.
- You prioritise rear-seat room and a larger, flat-floor boot.
Choose the BYD Dolphin if…
- You want the most distinctive, charming interior in the budget class.
- You place battery fire safety (LFP Blade) above outright range.
- You mostly drive in cities and suburbs, under 150 km a day.
- Ride comfort matters more to you than driving engagement.
- You want the lowest possible purchase price and that rotating screen.
FAQ: MG4 vs BYD Dolphin
Is the MG4 or BYD Dolphin better value for money?
The BYD Dolphin has the lower entry price, undercutting the MG4 by roughly £500–£2,500 depending on trim. However, the popular MG4 Long Range adds a much larger 64 kWh battery and faster charging for about £2,500 more, so the MG4 often delivers more capability per pound for drivers who travel further.
Which has better real-world range, the MG4 or BYD Dolphin?
The MG4 Long Range leads in every scenario thanks to its larger 64 kWh battery, with the gap widening in winter where the Dolphin’s LFP chemistry loses proportionally more range. Expect the MG4 to deliver roughly 25–35 km more usable range in mixed and motorway driving.
Is the BYD Dolphin’s Blade battery safer than the MG4’s battery?
The BYD Dolphin uses LFP Blade battery chemistry, which has a demonstrably lower thermal-runaway risk than the NMC chemistry in the MG4. For safety-first buyers this is a genuine advantage, though both cars hold full 5-star Euro NCAP ratings.
Which budget EV charges faster, the MG4 or the BYD Dolphin?
The MG4 charges faster on both fronts: up to 117 kW DC versus the Dolphin’s 88 kW, and 11 kW three-phase AC at home versus the Dolphin’s 7 kW single-phase. On a motorway stop the MG4 recovers more range in the same time.
Final Verdict: Which Budget EV Wins?
These are two genuinely excellent electric cars that have redefined what £27,000–£31,000 can buy. By most objective measures, the MG4 Electric Long Range is the stronger all-rounder in 2026 — more range, faster charging, more engaging driving, a longer warranty, a wider dealer network and a more practical boot. For most buyers in most situations, it is the smarter purchase, and the modest premium over the Dolphin is repaid in everyday capability.
That said, the BYD Dolphin earns real praise and will be the right car for a specific buyer. If you spend most of your time in town, prize the most innovative interior in the segment, care deeply about battery fire safety and rarely drive long distances, the Dolphin’s lower price, charming character and Blade Battery credentials make it an entirely rational — and satisfying — choice. The headline is simple: buy the MG4 if you drive far and value dynamics; buy the Dolphin if you live in the city and love its character.
