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Dacia Spring vs MG eléctrico (MG4, ZS EV, Marvel R): which engine is more reliable?

According to our risk index, the MG eléctrico (MG4, ZS EV, Marvel R) carries less risk than the Dacia Spring: 20/100 (low risk) versus 29/100 (moderate risk). The Dacia Spring has 1 documented serious fault, the main one being «Serious traction battery alerts and their management (BMS)»; the MG eléctrico (MG4, ZS EV, Marvel R) has 1 documented serious fault, the main one being «High-voltage system fault warning and loss of propulsion».

Risk index

Dacia Spring

29

Moderate risk · 1 serious fault

Risk index

MG eléctrico (MG4, ZS EV, Marvel R)

20

Low risk · 1 serious fault

Lower risk

The index (0–100) weights the severity and frequency of the three most serious documented faults. How it is calculated

13 sourcesHow we work

Is the Dacia Spring reliable?

The Spring's drivetrain is simple, but Fiches-auto.fr records the charger and charging port as the category with the most testimonies (17 out of 73), and about nine serious alerts for the traction battery; the motor barely features. The sample is made up of voluntary reviews.[1]

See the 2 of the Dacia Spring faults

Is the MG eléctrico (MG4, ZS EV, Marvel R) reliable?

MG electric cars have few documented battery or motor faults; the most cited is AC charging, which is sometimes rejected or interrupted. What Car? places the MG4 in the lower part of its survey, mainly for minor electronics.[2][3][4]

See the 2 of the MG eléctrico (MG4, ZS EV, Marvel R) faults

Side-by-side comparison

Comparison of Dacia Spring and MG eléctrico (MG4, ZS EV, Marvel R)
Dacia SpringMG eléctrico (MG4, ZS EV, Marvel R)
Technical data
TypeEngineEngine
FuelElectricalElectrical
Displacement——
Timing——
Power45–65 hp143–435 hp
Productionsince 2021[5][6]since 2019[7][8][9][10]
Reliability
Risk index (what is it?)29Moderate risk20Low risk
Documented faults22
Of high or critical severity11
Worst severityHigh severityHigh severity
Main faults
  1. High severity: Serious traction battery alerts and their management (BMS)
  2. Medium severity: Faults in the on-board charger and charging port
  1. Medium severity: Charging faults: on-board charger and interrupted charging
  2. High severity: High-voltage system fault warning and loss of propulsion
Most expensive documented repairNo reliable dataNo reliable data
Which versions to buy
BuyRecommended versionsNone
  • ZS EV Long Range 72.6 kWh, 177 hp (2021-2024)[11]
With cautionVersions to be cautious about
  • Spring Electric 45, 45 hp (2021-2025)[1]
  • Spring Electric 65, 65 hp (2023-2025)[1]
  • MG4 Standard Range 51 kWh LFP, 170 hp (2022-present)[3]
  • MG4 Long Range 64 kWh, 204 hp (2022-present)[2]
  • MG4 Extended Range 77 kWh, 245 hp (2023-present)[2][3]
  • MG4 XPower 64 kWh, 435 hp (2023-present)[12]
  • ZS EV 44.5 kWh, 143 hp (2019-2021)[13]
  • ZS EV Standard Range 51 kWh LFP, 150 hp (2022-2024)[11]
  • Marvel R Comfort/Luxury 70 kWh, 180 hp (2021-2024)[4]
  • Marvel R Performance 70 kWh, 288 hp (2021-2024)[4]
AvoidVersions to avoidNoneNone

Severity of each fault: green, low; amber, medium; red, high; dark red, critical. How we rate them

Cars that each one is fitted to

Dacia Spring

MG eléctrico (MG4, ZS EV, Marvel R)

Other comparisons

With the Dacia Spring

With the MG eléctrico (MG4, ZS EV, Marvel R)

Compare other engines

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Sources

Every fact on this page links to its source. If you find an error, let us know.

  1. Tous les problèmes sur Dacia Spring 2021 (73 témoignages)Fiches-auto.fr · Reliability study · consulted 30 October 2026 · in French
  2. Fiabilité Mg MG4 (2023): toutes les pannes connuesFiches-auto.fr · Reliability study · consulted 30 October 2026 · in French
  3. Used MG4 2022-present reliabilityWhat Car? · Reliability study · consulted 30 October 2026
  4. Fiabilité Mg Marvel R (2021): toutes les pannes connuesFiches-auto.fr · Reliability study · consulted 30 October 2026 · in French
  5. Dacia Spring (Wikipedia, alemán)Wikipedia · Other source · consulted 30 October 2026 · in German
  6. Dacia Spring (Wikipedia, español)Wikipedia · Other source · consulted 30 October 2026 · in Spanish
  7. MG4 EVWikipedia · Other source · consulted 30 October 2026
  8. MG ZS (crossover): sección MG EZS / ZS EVWikipedia · Other source · consulted 30 October 2026
  9. Datos generales MG MG4 Electric Luxury (05/23 - 07/25)ADAC · Technical documentation · consulted 30 October 2026 · in German
  10. MG Marvel R Electric: motores, equipamiento y preciosCarnovo · Technical documentation · published 21 July 2023 · consulted 30 October 2026 · in Spanish
  11. Fiabilité Mg ZS: toutes les pannes connuesFiches-auto.fr · Reliability study · consulted 30 October 2026 · in French
  12. Foro GoingElectric: MG4 XPower con fallo del sistema de control y sin cargaGoingElectric · Owners' forum · consulted 30 October 2026 · in German
  13. Foro MGEVs: batería de tracción de un ZS EV de 2019 averiada con menos de 22.000 millasMGEVs.com · Owners' forum · published 26 August 2025 · consulted 30 October 2026