Are MG Cars Reliable? Data-Driven Rating (2026)

Are MG cars reliable in 2026? Short answer: yes, reasonably — and far more than the brand's old reputation suggests. Today's MG is a different company, and the owner data now backs up a clear upward trend, even though the brand was still bottom of one major survey as recently as 2024.

But "reasonably reliable" comes with nuance. It varies by model, and there are specific areas to know about before you buy. Here is the honest, data-led picture: the rating, the common issues by model, which ones to approach with caution, and who an MG actually suits.

Understanding the New MG

To judge MG's reliability, you have to understand the modern brand. It is fundamentally different from the British MG Rover Group many remember.

Today's MG is owned by SAIC Motor, one of China's largest carmakers, which took the brand on in 2007. That transition marked a complete shift in design, engineering and manufacturing.

So where are MG cars made now? They are primarily designed in London and built in state-of-the-art facilities in China and Thailand. SAIC's strategy targets the value end of the market: stylish, feature-rich cars, especially EVs, at a highly competitive price.

Initial scepticism in Western markets was high, but sales growth has challenged it. MG became one of the UK's best-selling EV brands, and it is a strong seller across Australia and Europe too, which makes the reliability question more relevant than ever.

What the Reliability Data Says

This is not opinion — it is built on third-party owner data. The main sources are the big owner surveys (What Car?, J.D. Power's Vehicle Dependability Study, Consumer Reports) plus long-term expert tests, cross-checked against owner communities. A key metric is "Problems Per 100 Vehicles" (PP100), where lower is better.

It is worth being straight about the low point. In the 2024 What Car? Reliability Survey, covering almost 30,000 cars up to five years old, MG finished last of around 30 brands with a reliability score of 76.9%. About 37% of MGs had suffered a fault, and repairs were often slow. The EVs pulled the score down hardest: the MG4 was the least reliable single model at 63.8% and the ZS EV scored 69.3%, though the MG5 stood out with a strong 92%.

The important shift is what happened next. In the 2025 survey MG climbed to 88.9%, a 12-point jump on the year before. So the "most unreliable" headline was a real 2024 snapshot, but the trend is firmly upward as the newer models replace the early ones.

The important bit for a buyer: MGs are not fault-free, but the type of fault matters. The most common ones are non-critical, such as glitchy infotainment and minor electrical bugs. Catastrophic engine, gearbox or EV battery failures are much rarer, which directly addresses the core fear about a value brand.

Since MG's most-reported faults are software and electrical, a plug-in OBD2 scanner earns its keep. It reads the fault codes behind a warning light on your phone, useful on your own MG and for checking stored faults on a used one before you buy.

Model-by-Model Breakdown

MG ZS (Petrol and EV)

The brand's volume seller, so it offers the most data. It is praised for practicality, value and low running costs, the EV version especially, where owners rate the real-world range and easy driving. Commonly reported ZS issues:

• Infotainment lag and occasional freezing, slow to respond on cold-weather start-ups
• Some 12V battery drain on early EV models, usually fixed with a software update
• Interior trim and plastics that wear faster than premium rivals
• Pre-2022 ZS EV shows more battery-degradation variance; the 2022+ cars are notably more stable

MG HS / HS Plug-in Hybrid

MG's family-SUV contender, praised for a spacious interior, generous standard kit and a comfortable ride. It scores a full five-star Euro NCAP rating. The main gripes:

• Petrol DCT hesitation — the dual-clutch automatic can pause at low speeds in stop-start traffic
• Early PHEV software bugs — a minority of early owners noted glitches in the electric-to-petrol switchover, addressed by updates

MG4 EV

Widely seen as a game-changer and a benchmark for affordable EVs, with near-universal praise for its driving dynamics, competitive range and aggressive pricing, plus a five-star Euro NCAP rating. It scored worst in the 2024 survey largely on software and electrical niggles rather than mechanical faults, and later-build cars have addressed many of them. The few common complaints are not mechanical:

• Over-eager driver assists — the lane-keep assist can feel intrusive
• No rear wiper — a recurring talking point in wet climates
• Charging-port and occasional infotainment niggles on early cars

Crucially, the MG4 rides on MG's modern Modular Scalable Platform (MSP), which underpins many future models — a strong foundation for the brand's reliability from here. The charging-port area is one niggle owners flag; a snug dust- and water-proof charging-port cover is inexpensive protection that keeps grit and moisture out of the port between charges.

MG5 EV

The one that quietly makes MG's reliability case. The MG5 EV estate scored a strong 92% in the 2024 What Car? survey and has become a genuine workhorse in the UK's taxi and private-hire trade, where cars routinely pass 100,000 miles (160,000 km) on little more than routine servicing. It is the clearest evidence that MG's core electric drivetrain is durable under demanding, high-mileage use.

How Long Do MG Cars Last?

Survey data measures faults in the first few years; longevity is a separate question, and here MG does better than its reputation. The taxi-fleet MG5 EVs crossing 100,000 miles (160,000 km) on routine maintenance show the motor and battery holding up well.

For petrol models like the MG HS, 150,000 miles (240,000 km) is realistic with consistent servicing, in line with modern turbocharged engines, while the simpler MG3 engine is mechanically robust even if it is more prone to minor electrical niggles.

For EV battery life specifically, MG uses modern liquid-cooled packs from CATL, a world-leading supplier. Community reports suggest degradation of around 5-10% over the first 100,000 miles (160,000 km), in line with industry norms, and the battery is covered separately for 8 years or 100,000 miles.

Cost of Ownership and Warranty

True reliability is not just avoiding breakdowns — it is the long-term cost of keeping the car on the road. For a value buyer, that matters as much as the sticker price.

The 7-Year Warranty (and 8-Year Battery Cover)

MG's headline asset is one of the best warranties in the business:

• 7 years / 80,000 miles on every new MG (petrol, PHEV or EV); no mileage limit for the first 12 months
• 8 years / 100,000 miles battery cover on hybrid and EV packs, guaranteeing at least 70% capacity in that window
• 7-year anti-perforation cover against rust that perforates the bodywork

It covers manufacturing defects in materials or workmanship. It does not cover wear items like tyres, brake pads or windscreen wipers — standard across the industry, but worth knowing.

Servicing, Parts and the Aftermarket

Scheduled maintenance is competitive — official dealer servicing is often cheaper than mainstream Japanese or German rivals, which lowers total cost of ownership. The dealer network is expanding, and parts availability for common items is strong.

For owners who prefer DIY maintenance or want upgrades, the MG aftermarket is growing fast, a healthy sign for long-term ownership. Our MG parts range covers essential replacements, from a clutch kit for the MG3 and MG5 through to filters, brakes and accessories, shipped across AU, NZ, the UK and Europe.

Which MG to Buy — and Which to Approach with Caution

Your ownership experience hinges on the specific model, powertrain and model year, so choosing well is the best way to avoid trouble.

As a rule, favour 2022-onward cars, and for the MG4 look for late-2023 builds. Whatever you buy used, test every infotainment function, check all windows and mirrors, insist on a full service history to keep the warranty intact, and ideally plug in an OBD2 reader to check for stored fault codes first.

How MG Compares

Reliability only means something in context. Against its key rivals:

• vs Toyota / Honda — MG is not at the level of these legacy champions yet. They still lead on flawless fit-and-finish and decades-proven durability, with lower fault rates.
• vs Kia / Hyundai — the most relevant comparison. MG follows the same playbook (long warranty plus rapid quality gains) and is competitive on value, though the Korean pair currently edge ahead on survey scores.
• vs mainstream European (VW, Peugeot) — recent surveys often show MG with fewer reported faults than several European brands, even if a VW's cabin materials feel more premium.

The 2026 Verdict: Who Should Buy an MG?

Based on current data and a clear upward trajectory, MG is a reasonably reliable, excellent-value brand in 2026. The ownership experience is much better than the old reputation suggests, and the core petrol and EV powertrains look robust. The compromises are in non-critical areas: occasional software glitches and interior plastics that do not feel as premium as pricier rivals.

An MG suits you if you prioritise value, standard kit and low running costs above all else; you are entering the EV market and want maximum range and tech for the money; and you can live with a brand still building its reputation, shrugging off minor infotainment quirks. Look elsewhere if you demand a flawless, premium-feeling cabin, or if your top priority is a decades-long, undisputed reliability reputation like Toyota or Honda.

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