The MG4 vs BYD Dolphin comparison changed substantially in early 2026. MG gave the MG4 a significant facelift — new interior, larger screens, and a restructured lineup starting from £29,995. BYD dropped the Dolphin’s cheaper trims, meaning new buyers now start at £30,195 with the 60.4 kWh Comfort. For the first time, these two budget EVs compete at essentially the same price point. That makes this a genuine feature-for-feature comparison rather than a price-tier debate.
MG4 vs BYD Dolphin 2026 — Quick Verdict: The MG4 wins on range (280–338 miles WLTP vs 265), charging speed (144–154 kW vs ~88 kW), driving dynamics, and interior quality after its 2026 facelift. The BYD Dolphin wins on battery longevity (Blade LFP), standard equipment depth, and urban efficiency. At ~£30,000, the MG4 Premium Long Range is the stronger all-rounder. The Dolphin is the better choice for city-focused buyers who prioritize battery durability over range and charging speed. Both offer 5-star Euro NCAP safety.
2026 Spec Comparison at a Glance
| Spec | MG4 Premium LR (2026) | BYD Dolphin Comfort (2026) |
|---|---|---|
| UK Price (from) | £29,995 (£28,495 with discount) | £30,195 |
| Battery | 64 kWh LFP | 60.4 kWh LFP (Blade) |
| WLTP Range | 280 miles | 265 miles |
| Real-World Range | ~240 miles (mixed) | ~220 miles (mixed) |
| Power | 188 hp (140 kW) | 201 hp (150 kW) |
| DC Fast Charge Max | 144 kW | ~88 kW |
| 10–80% Time | ~26 min | ~35 min |
| Euro NCAP | 5 stars | 5 stars |
| Warranty | 7 years / 80,000 miles | 6 years / 8 years battery |
| Boot Space | 363 litres | 345 litres |
| Drive | RWD | FWD |
Price and Value for Money
The pricing dynamic shifted in 2026. BYD dropped the cheaper Active and Boost trims, pushing the Dolphin’s entry point to £30,195 (Comfort). MG’s facelift restructured the lineup: the old small-battery model was replaced by the separate MG4 Urban (from £23,495), while the “real” MG4 starts at £29,995 for the Premium Long Range. With MG’s current £1,500 discount, that drops to £28,495 — making the MG4 approximately £1,700 cheaper than the Dolphin with 15 more miles of WLTP range.
Both cars come well-equipped at base. The MG4 Premium includes heated seats, heated steering wheel, wireless phone charging, 360-degree camera, 12.8-inch touchscreen, and 10.25-inch driver display. The Dolphin Comfort includes adaptive cruise, heated front seats, heat pump, V2L capability, and a rotating 12.8-inch screen. On raw standard equipment, the Dolphin includes V2L and a heat pump that the MG4 doesn’t — features with genuine long-term value. The MG4 counters with a longer 7-year warranty vs BYD’s 6 years (though BYD’s 8-year battery warranty is strong).
For budget buyers: the MG4 Urban at £23,495 (or ~£22,000 with discount) is the real value play — a different car but occupying the price point the Dolphin used to. See our cheapest EVs in 2026 guide for the full picture.
Battery, Range, and Charging
Both cars use LFP chemistry at their comparable trims, which means excellent cycle life and the ability to charge to 100% daily without accelerating degradation. However, the MG4’s 64 kWh LFP pack delivers 280 miles WLTP vs the Dolphin’s 60.4 kWh for 265 miles. In real-world mixed driving, that translates to approximately 240 miles vs 220 miles — a consistent 15–20 mile advantage for the MG4.
The bigger gap is charging speed. The MG4 supports up to 144 kW DC, reaching 10–80% in approximately 26 minutes. The Dolphin maxes at ~88 kW, taking ~35 minutes for the same charge. On a 300-mile road trip, the MG4’s faster charging and longer range means one fewer stop and ~20 minutes saved. For daily home charging, both are identical — overnight on a 7 kW wallbox fills either battery completely. For more on how these batteries hold up over time, see our EV battery longevity guide.
Performance and Driving Experience
The MG4 is the more engaging driver’s car — and it’s not particularly close. Its rear-wheel-drive layout, well-calibrated steering, and responsive throttle make it feel surprisingly dynamic for a budget EV. The 2026 facelift added a proper one-pedal driving mode, addressing a previous omission. Carwow and What Car? both note that the MG4 absorbs bumps better than the Dolphin, though neither car is as composed as a Cupra Born on undulating roads.
The Dolphin prioritizes comfort. Its light steering and soft suspension make urban driving relaxed and effortless, but the trade-off is noticeable body roll through corners and less confident motorway stability. Autocar noted the Dolphin’s steering as “light and uncommunicative” at speed. For city commuters who rarely exceed 40 mph, this isn’t a weakness — it’s a feature. For anyone who enjoys driving or regularly uses motorways, the MG4 is the clear winner.
Interior Quality and Technology
The 2026 MG4 facelift transformed the interior. Piano black plastic is gone, replaced by soft-touch materials and a new full-height centre console. The 12.8-inch infotainment screen and 10.25-inch driver display are crisp and responsive. Physical controls returned for climate and volume — a welcome change from the previous touchscreen-only approach. Electrifying.com called the new interior “a really nice place to sit” and noted it now feels “much closer to rivals in quality.”
The Dolphin’s interior is more distinctive but polarizing. BYD’s maritime-themed cabin with dolphin-fin door handles and wave-pattern dashboard detailing is either charming or overwrought depending on taste. The rotating 12.8-inch screen is a unique feature — it physically rotates between portrait and landscape orientation. Standard equipment is generous, but the lack of physical controls and occasionally intrusive driver alerts (What Car? noted “too much bonging”) can frustrate some buyers.
Safety and Driver Assistance
Both cars hold 5-star Euro NCAP ratings with strong scores across adult, child, and pedestrian protection. The Dolphin includes adaptive cruise control, AEB with cyclist/pedestrian detection, blind-spot monitoring, rear cross-traffic alert, and 360-degree camera as standard on all trims. The MG4 Premium matches most of these and adds its own 360-degree camera. In practice, the MG4’s lane-keeping and adaptive cruise feel more refined at motorway speeds. The Dolphin’s systems are better calibrated for urban stop-start driving. See our Chinese car crash test analysis for the full picture.
Reliability and Ownership Costs
Both use LFP batteries with excellent long-term durability — capacity above 90% at 100,000 km is expected for both, though BYD’s Blade Battery has the larger published dataset supporting this claim. MG’s 7-year/80,000-mile warranty is longer than BYD’s 6-year vehicle warranty, but BYD’s 8-year battery warranty provides stronger specific coverage for the most expensive component. MG’s European service network is more established — a genuine advantage for buyers outside major cities. BYD offers 5 years of free servicing in the UK to close this gap. Energy costs are comparable: both achieve approximately 4.0–4.4 mi/kWh in mixed driving, translating to £3–4 per 100 miles on home charging. For a deeper dive, see our Chinese car reliability analysis.
Who Should Buy Which? — MG4 vs BYD Dolphin 2026
Choose the MG4 If…
- You regularly drive motorway miles or take road trips
- DC fast charging speed matters to you
- You want the more engaging driving experience
- Interior quality and physical controls are a priority
- You value the longer 7-year warranty and wider service network
- You want the best range-per-pound ratio
Choose the BYD Dolphin If…
- Your driving is primarily urban or suburban
- Battery longevity and Blade Battery technology matter most
- You want V2L capability and a heat pump as standard
- Comfort-focused ride is more important than handling
- You plan to keep the car 8+ years
- Free servicing for 5 years reduces ownership uncertainty
FAQ — MG4 vs BYD Dolphin 2026
Is the MG4 better than the BYD Dolphin in 2026?
For most buyers, yes — the 2026 MG4 facelift offers more range (280 vs 265 miles), faster charging (144 kW vs 88 kW), a better interior, and more engaging handling at a slightly lower price. The Dolphin wins on battery durability (Blade LFP), V2L capability, and urban comfort. The right choice depends on whether you prioritize road-trip capability (MG4) or city-focused efficiency (Dolphin).
Which has better battery durability — MG4 or BYD Dolphin?
Both use LFP chemistry at their comparable trims, which offers excellent long-term cycle life. The Dolphin’s Blade Battery has the larger published degradation dataset and is widely regarded as the benchmark for LFP durability. The MG4’s 2026 Long Range also uses LFP, so the gap is narrower than it was when the MG4 used NMC exclusively.
Which is cheaper to run — MG4 or BYD Dolphin?
Running costs are very similar. Both achieve approximately 4.0–4.4 mi/kWh in mixed driving, costing ~£3–4 per 100 miles on home charging. The Dolphin includes 5 years free servicing in the UK. The MG4 has a longer 7-year warranty reducing out-of-pocket repair risk. Energy costs are essentially identical between the two.
MG4 vs BYD Dolphin for city driving — which is better?
The BYD Dolphin edges ahead for city-only driving thanks to its comfortable ride, light steering, excellent urban efficiency, and V2L capability. The MG4 is also capable in cities but its firmer suspension and sportier setup are better appreciated on faster roads. If you never leave town, the Dolphin’s relaxed character suits the environment better.
How much does the MG4 cost in 2026?
The 2026 MG4 starts at £29,995 (Premium Long Range, 280 miles) with a current £1,500 discount bringing it to £28,495. The Extended Range (338 miles) is £32,995 and the XPower performance model is £33,995. The separate MG4 Urban starts from £23,495.
How much does the BYD Dolphin cost in 2026?
The 2026 BYD Dolphin starts at £30,195 (Comfort, 265 miles) with the Design trim at £31,695. The cheaper Active and Boost trims have been discontinued for new buyers. BYD offers 5 years free servicing and an 8-year battery warranty.
What about the MG4 Urban — is it a better value than both?
The MG4 Urban (from £23,495) is a different car on a different platform, offering FWD, 43/54 kWh batteries, and 323–415 km WLTP range. It’s significantly cheaper but has a less premium interior and shorter range than the “main” MG4. For pure budget buyers, it’s the strongest value EV in the UK in 2026.
Are MG4 and BYD Dolphin safe?
Both hold 5-star Euro NCAP ratings with strong scores across all categories. Both include comprehensive ADAS suites as standard. The Dolphin includes slightly more ADAS at base trim; the MG4’s systems feel more refined at motorway speeds.
- Carwow MG4 Review — 2026 facelift pricing, specs, and driving impressions
- Auto Express MG4 Review — 2026 lineup restructure and pricing details
- Carwow BYD Dolphin Review — 2026 trim changes and comparative analysis
- Euro NCAP — Independent crash test results for both models
- Electrifying.com MG4 Review — Interior quality and battery chemistry analysis
- What Car? Dolphin Review — Pricing, ownership costs, and real-world assessment
