Renault 4 E-Tech 1(P01) — Problems & Common Faults
Weaknesses, engine ratings and buying advice
The Renault 4 E-Tech Electric is the more practical, larger sibling of the Renault 5 E-Tech and shares its AmpR Small platform along with the externally-excited synchronous motor that runs without rare earths. Two drivetrain versions are offered: a base version with a smaller battery aimed mainly at city and commuter use, and a stronger version with a larger battery for more range and payload. Both motors are considered technically robust, since the classic wear parts of a combustion engine are absent. The most critical point for a used-car buyer is the young model age: production only started in 2025, so long-term reliability data is still thin.
One point worth taking seriously is the recall over anode delamination in battery cells from certain production batches built in December 2025 and January 2026 — it is worth checking the recall history via the VIN before buying. Beyond that, the R4 mainly shows early-production teething troubles: isolated warning-light cascades from ABS or ESP sensors, a brief system reboot with display blackout while driving, and initial software quirks when starting a charge at a home wallbox. Most of these issues can be fixed with an update or a workshop visit, but they are worth asking about during a test drive and checking in the service history.
Mechanically, two points stand out that are typical of light electric cars with strong regenerative braking: the rear brake discs see little use because of regen braking and can seize with rust, which regular deliberate use of the brake pedal prevents. Under sustained load, such as long downhill stretches, the compactly sized brake system also shows slight fade. The suspension is firmly tuned and reacts harshly to short bumps, a trade-off of the light weight and limited suspension travel.
Build quality is a mixed picture: interior materials feel more upscale than the price suggests, but individual test cars had not-quite-cleanly finished plastic trim and a loosely fixed carpet. Winter conditions take a noticeable toll — real-world consumption in cold weather clearly exceeds factory figures, highway range drops accordingly, and without active battery preheating fast-charging power also comes in lower. Anyone who drives a lot in cold weather should look for a trim with working navigation-based preconditioning — on the base trim without built-in navigation, this feature practically does not activate.
For a used purchase, a car with as recent a software version as possible is advisable, since many reported glitches have been fixed via updates. On a test drive it is worth checking the brake discs from the outside, testing the tailgate remote release, and watching for unusual warning messages while driving. Buyers who mainly drive economically around town will be well served by the base version; those who drive more on the highway or want more margin on range and payload should go for the stronger version with the larger battery. Overall, a likeable but still young model whose full reliability picture will only emerge over the coming years.
Engine Overview
The Renault 4 E-Tech 1 is available with 2 engine variants — from 122 to 150 hp.
The externally-excited synchronous motor on the AmpR Small platform runs entirely without rare earths in the rotor, cutting raw-material dependency and cost without Renault reporting any downside in efficiency or durability. In the base tune it delivers enough shove for city and country roads, is noticeably more restrained than the stronger version, and counts as the more efficient but less brisk unit of the range. Classic wear parts are largely absent, so the design is considered robust and low-maintenance. Since the technology has only just reached the market, solid long-term data is still scarce; early feedback points mainly to software teething troubles that are being addressed through updates. In cold weather it shows the efficiency drop typical of most electric drivetrains.
- !! Brief system reboot with display blackout while driving
In isolated cases the display switches off completely for a few seconds while driving and restarts with altered readings, while warning messages stay active. A manual restart usually resolves it immediately.
Symptoms: Brief display blackout at higher speed, turn signal briefly unresponsive, consumption display jumps to a different value. - ! Vehicle does not reliably wake up to charge at a wallbox
Before a software update, the vehicle would fall asleep at the home wallbox and not start charging on its own. An update addressing charging-station compatibility was meant to fix this.
Symptoms: Charging does not start automatically at the wallbox, vehicle stays in sleep mode instead of charging. - ! Real-world consumption and charging power well below spec in cold weather
At near-freezing temperatures, measured consumption clearly exceeds the WLTP figure and highway range drops accordingly. DC charging power also comes in noticeably lower without adequate battery preheating.
Symptoms: Range estimate drops disproportionately in cold weather, fast-charging sessions take longer than in summer.
The more powerful tune of the externally-excited synchronous motor also does entirely without rare earths in the rotor by design, relying instead on an externally-excited winding to generate the magnetic field. Compared with the base version it delivers noticeably more pull and feels more agile day to day without losing the basic robustness of the design. Classic wear parts found in a combustion engine are largely absent, keeping maintenance needs low. As the range has only been in production for a short time, reliable experience so far is limited to early production batches, where software and control-unit issues stood out most. At low outside temperatures efficiency drops noticeably, affecting both consumption and charging power.
- !! Brief system reboot with display blackout while driving
In isolated cases the display switches off completely for a few seconds while driving and restarts with altered readings, while warning messages stay active. A manual restart usually resolves it immediately.
Symptoms: Brief display blackout at higher speed, turn signal briefly unresponsive, consumption display jumps to a different value. - ! Vehicle does not reliably wake up to charge at a wallbox
Before a software update, the vehicle would fall asleep at the home wallbox and not start charging on its own. An update addressing charging-station compatibility was meant to fix this.
Symptoms: Charging does not start automatically at the wallbox, vehicle stays in sleep mode instead of charging. - ! Real-world consumption and charging power well below spec in cold weather
At near-freezing temperatures, measured consumption clearly exceeds the WLTP figure and highway range drops accordingly. DC charging power also comes in noticeably lower without adequate battery preheating.
Symptoms: Range estimate drops disproportionately in cold weather, fast-charging sessions take longer than in summer.
Vehicle Weaknesses
| Weakness | Cost | |
|---|---|---|
| Recall: battery cell anode delamination (fire risk) Vehicles built between 12 December 2025 and 28 January 2026 may have a battery cell with a detached anode. Loose material can trigger an internal short circuit and, in extreme cases, a fire. | Low | |
| Battery preconditioning ineffective without built-in navigation On the base trim without built-in navigation, no charging stop can be set as a destination, so battery preconditioning never activates. Charging power is noticeably limited in cold weather as a result. Symptoms: Markedly reduced fast-charging power at low outside temperatures despite preconditioning being advertised as a feature. | Low | |
| Noticeable wind noise from country-road speeds From around 100 km/h, wind noise in the cabin becomes clearly audible according to test drives. Given the low top speed of 150 km/h, this stands out particularly on longer trips. Symptoms: Increasing wind noise in the cabin from around 100 km/h, especially around the A-pillar. | Low |
Test Reports
ADAC
ADAC test score of 2.1 (good), ranked 3rd among electric cars in its class. Equipment, cargo space and short braking distance (34.4 m) are praised, while modest charging power, the missing frunk and a high step in the folded load area are criticized.
2025AUTO BILD
The test drive criticizes the firm suspension over bumps, wind noise from 100 km/h, slight brake fade and not-quite-clean finishing of plastic parts and carpet. High recycled-material content and a solid material feel are highlighted positively.
2025Known Problems and Issues +
A total of 16 weaknesses have been documented for the Renault 4 E-Tech 1 (2025–2026) — 6 engine-related and 10 vehicle-related. Typical issues affect Other, Electronics, Brakes, Suspension. Considered reliable: R4-EV-90 (Elektro 40kWh), R4-EV-110 (Elektro 52kWh).
What to watch out for with the Renault 4 E-Tech? See the detailed listing of all engine and vehicle weaknesses in the sections above.
Frequently Asked Questions
What problems and weaknesses does the Renault 4 E-Tech 1 have? +
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Last updated: February 2026 · All information without guarantee