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This guide is for general information only. EVcourse is not affiliated with MG or REWE Charging. Charging speeds and compatibility vary by station, vehicle variant, and conditions. When in doubt, contact MG or REWE Charging support.

Troubleshooting

MG MG4 Charging at REWE Charging

Updated March 2026

The MG MG4 is compatible with REWE Charging chargers. Here is what you need to know about charging speed, connector fit, and how to handle common problems.

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Compatibility Overview

Approximate values. Actual speeds depend on temperature, battery state, and station load.

Connector match
Compatible
Car connector
CCS2
Network connectors
CCS2
Max charging speed
142 kW
10-80% estimate
25 min
Payment
app, contactless

Why Your Charging Speed May Differ

The MG MG4 supports up to 142 kW DC charging. REWE Charging chargers deliver up to 300 kW. Your car's maximum intake is the limiting factor here, capping speed at 142 kW even on a faster charger.

  • Charging slows down above 80% state of charge on most EVs, including the MG MG4.
  • Cold weather reduces charging speed. The MG MG4 supports battery preconditioning, which helps.
  • If multiple cars share the same REWE Charging station, power may be split between stalls.

MG MG4 Charging Problems

MG MG4 Charger Won't Start? How to Fix It Now

You have plugged in your MG MG4 but nothing is happening. The charger light is blinking, the car is not responding, or you are getting an error message. This is frustrating, but most failed charging sessions have a simple fix. Let's walk through the common causes.

Symptoms

  • Charger display shows an error code or red indicator
  • CCS2 connector clicks in but charging does not begin
  • Car dashboard shows no charging activity after plugging in
  • Charger screen asks for authentication but does not accept your card or app
  • Charging port light on the MG4 flashes or stays amber

What to Do

  1. 1

    Check the charger screen for error messages

    Read any error codes or messages on the charger display. Common messages include 'authentication required,' 'connector error,' or 'out of service.' This tells you whether the problem is the charger or the car.

  2. 2

    Unplug and replug the connector

    Remove the CCS2 or Type 2 connector completely, wait 10 seconds, and plug it back in firmly. Make sure you hear the click and the MG4's charge port light responds.

  3. 3

    Authenticate again

    Re-tap your RFID card, restart the session in the app, or try contactless payment. Some chargers require you to authenticate before plugging in, others after. Try both sequences.

  4. 4

    Disable scheduled charging

    On the MG4's infotainment screen, go to vehicle settings and check if scheduled charging is enabled. Turn it off temporarily to allow immediate charging.

  5. 5

    Lock and unlock the car

    Use the MG4's key fob or the MG iSMART app to lock and then unlock the car. This can reset the charge port communication and clear temporary errors.

  6. 6

    Try a different charger or stall

    If nothing works on this stall, try another one at the same station. If the entire station fails, the problem is likely the charger infrastructure, not your MG4.

MG MG4 Charging Payment Failed? Fix It Quickly

You are at a charger with your MG MG4 and the payment is not going through. Your card gets rejected, the app throws an error, or you cannot figure out how to pay at all. Payment issues are one of the most common reasons a charging session fails to start. Here is how to sort it out.

Symptoms

  • RFID card tap does not register on the charger
  • Charging app shows a payment error or insufficient funds
  • Contactless bank card is declined at the charger terminal
  • Charger asks for payment but you cannot find a method that works
  • Session starts but stops immediately due to payment authorization failure

What to Do

  1. 1

    Check which payment methods the charger accepts

    Look at the charger for logos showing accepted payment types: RFID, app, contactless card, QR code. Many chargers display the logos of compatible networks near the screen or card reader.

  2. 2

    Try the network's app

    Scan the QR code on the charger or search for the network's app in your phone's app store. Many networks let you start a session through their app even without an RFID card.

  3. 3

    Try a different payment method

    If your RFID card fails, try the app. If the app fails, try contactless. If you have a multi-network roaming card (like Plugsurfing or Shell Recharge), try that instead.

  4. 4

    Check your card balance and bank notifications

    Open your banking app to check for declined transactions or pre-authorization holds. Contact your bank if the charger is trying to authorize a large hold that exceeds your available balance.

  5. 5

    Use a roaming service

    If you do not have an account with this specific network, a roaming provider like Plugsurfing, Chargemap, or Shell Recharge may cover this charger. These services work across multiple networks with one card or app.

  6. 6

    Find an alternative charger nearby

    If payment truly will not work, search for another charger nearby. Filter your charging app by your available payment methods to find a compatible station.

MG MG4 Charging Slowly? Causes and Quick Fixes

You plugged in your MG MG4 expecting fast charging, but the kW reading is disappointingly low. This is one of the most common frustrations for MG4 drivers, and it usually has a straightforward explanation. Here is what to check and how to get closer to the 142kW DC maximum your car supports.

Symptoms

  • DC charging power showing well below 142kW on the charger display
  • AC home or destination charging stuck below 11kW
  • Estimated charging time much longer than expected
  • Battery percentage climbing very slowly after 60-70% SOC
  • Charging power drops significantly in cold weather

What to Do

  1. 1

    Check the charger's rated power

    Look at the charger label or app to confirm its maximum output. If it is a 50kW unit, your MG4 cannot charge faster regardless of its 142kW capability.

  2. 2

    Check your battery temperature and SOC

    On the MG4's instrument cluster, check your current state of charge. If you are above 70%, the taper is normal. In cold weather, use the preconditioning feature by setting the charger as your navigation destination.

  3. 3

    Activate preconditioning via navigation

    Set the fast charger as your destination in the MG4's built-in navigation. This triggers battery preconditioning, warming the pack to an optimal temperature before you arrive.

  4. 4

    Try a different CCS2 stall

    If the charger has multiple stalls, power may be shared between them. Try an adjacent stall or wait for other cars to finish. Some charging sites have dedicated high-power stalls.

  5. 5

    Check your AC charging cable

    For AC charging, make sure you are using a cable rated for at least 11kW (3-phase, 16A). A single-phase cable limits you to about 3.6kW regardless of what the charger or car supports.

  6. 6

    Verify no charging limit is set in the car

    In the MG4's settings, check if a charging current limit or maximum SOC limit has been set. A reduced AC charging current setting will cap your speed even on a capable charger.

Common REWE Charging Issues

Charger occupied by non-charging vehicles

You arrive at the REWE charger and a car is parked in the charging spot without being plugged in. This is common at supermarket locations where shoppers treat EV spots as regular parking.

Symptoms

  • Charging spot is occupied by a car with no cable connected
  • ICE vehicle parked in the EV charging bay
  • Car is plugged in but session has clearly ended and the driver is inside shopping
  • All charging spots taken despite the app showing the charger as available

How to Fix It

  1. 1

    Check if the other car is actively charging

    Look at the charger display or connector. If the session has ended and the car is just parked, REWE cannot remotely move it. The app status reflects the charger, not the parking spot.

  2. 2

    Ask at the REWE customer service desk

    REWE staff can sometimes make a store announcement asking the vehicle owner to move. This works more often than you would expect.

  3. 3

    Wait briefly or shop first

    At supermarket chargers, turnover is high. Most shoppers leave within 30 to 45 minutes. Do your shopping and check again.

  4. 4

    Check for additional REWE locations nearby

    Many German cities have multiple REWE stores with chargers within a short drive. Check the app for the next closest option.

Contactless card reader not responding

You tap your debit or credit card on the reader but nothing happens. The reader does not beep, does not show a light, or shows an error briefly before resetting.

Symptoms

  • Card reader shows no response when you tap
  • Reader beeps but the screen shows an error
  • Card works at the REWE checkout inside but not at the charger
  • Contactless symbol is visible on the reader but it seems inactive

How to Fix It

  1. 1

    Hold your card flat against the reader for 3 to 5 seconds

    Some REWE charger readers are slower than store payment terminals. Hold the card still and wait for the full processing time.

  2. 2

    Remove your phone and other cards from the area

    If you hold your wallet with multiple contactless cards near the reader, it may detect interference and reject the transaction.

  3. 3

    Try the charging app instead

    If contactless is not working, start the session through the REWE charging partner app. This bypasses the physical card reader entirely.

  4. 4

    Check if the reader is physically damaged

    Supermarket chargers are exposed to shopping carts, weather, and heavy foot traffic. If the reader looks cracked or the screen is damaged, report it to REWE staff inside and try another stall if available.

Session ends due to maximum stay time limit

Your charging session stops before the battery is full because REWE enforces a maximum parking time at the charging spot. This exists to keep spots available for other shoppers.

Symptoms

  • Charging stops after 60 to 90 minutes even though the battery is not full
  • App notification says session ended due to time limit
  • You return from shopping to find the charger disconnected
  • Charger screen shows session completed despite low battery level

How to Fix It

  1. 1

    Check the posted time limit before you start

    REWE typically allows 60 to 120 minutes depending on the location. Look for signage near the charger or check the app for time restrictions at that specific store.

  2. 2

    Plan your charge around your shopping time

    At up to 300 kW, most EVs can gain 150 to 250 km of range in 30 to 45 minutes. A normal grocery run is usually enough time for a meaningful charge.

  3. 3

    Move your car if you need more time

    If you need a longer session, move your car to a regular parking spot after the time limit and start a new session if the charger is free when you return.

  4. 4

    Use REWE chargers for top-ups, not full charges

    Supermarket chargers work best for adding range while you shop, not for charging from 10% to 100%. If you need a full charge, plan for a dedicated fast charging station.

Poor mobile signal in underground or garage parking

Some REWE stores have chargers in basement or covered parking areas where mobile signal is weak. This can prevent the app from starting a session or processing contactless payments.

Symptoms

  • App shows 'No connection' or spins without loading
  • Contactless payment times out during processing
  • You cannot scan the QR code on the charger because the page will not load
  • Session starts but the app loses connection and cannot show charging status

How to Fix It

  1. 1

    Connect to REWE store WiFi if available

    Many REWE stores offer free WiFi that may reach the parking area. Check for a REWE network in your phone's WiFi settings.

  2. 2

    Walk closer to the garage entrance to start the session

    If you need the app to start the session, walk toward the exit where signal is stronger, start the session remotely, then return to your car.

  3. 3

    Use contactless payment instead of the app

    Contactless card payments are processed through the charger's built-in connection, not your phone. If the card reader works, you do not need mobile signal.

  4. 4

    Pre-load the app before entering the garage

    Open the app and navigate to the station page while you still have signal. Some apps cache enough data to start a session even with intermittent connectivity.

Charger unavailable outside store hours

You arrive at a REWE charger outside store opening hours and the charger is inaccessible or powered down. Some locations gate their parking areas or shut down chargers when the store closes.

Symptoms

  • Parking area gate is locked and you cannot reach the charger
  • Charger screen is dark and does not respond
  • App shows the charger as available but the physical location is closed
  • Barrier arm blocks entry to the parking lot after closing time

How to Fix It

  1. 1

    Check store hours before planning a charge

    REWE stores in Germany typically close between 20:00 and 22:00 on weekdays and earlier on Saturdays. Most are closed on Sundays. If the charger is behind a gate, you cannot access it outside these hours.

  2. 2

    Verify 24/7 access in the app

    Some REWE charging locations offer 24/7 access even when the store is closed. Check the station details in the app. If it does not mention 24-hour access, assume it follows store hours.

  3. 3

    Leave the parking area before the store closes

    If you are charging and the store is about to close, make sure you can exit the parking area. Some locations lock the barrier after closing, which could trap your car overnight.

  4. 4

    Find an alternative nearby charger

    Use a multi-network app like Chargemap or the EVcourse charger finder to locate a 24/7 charger nearby. Dedicated charging stations along main roads usually operate around the clock.

REWE Charging App Tips

  • REWE chargers are often operated by a charging partner (such as Allego or EWE Go). Check which app you actually need by scanning the QR code on the charger or looking at the operator logo.
  • Pre-load the station page in the app before entering a parking garage. Underground signal issues are common at REWE locations.
  • Enable session end notifications so you can move your car promptly and avoid blocking the spot for other shoppers.
  • Check the app for time limits at each specific REWE location. They vary by store and are not always posted clearly on signage.
  • If the app is not working, look for a phone number on the charger itself. The charging operator (not REWE) handles technical support.

Payment Tips

  • Contactless debit and credit cards usually work at REWE chargers without needing an app or account. Look for the contactless symbol on the card reader.
  • Pre-authorization holds can be up to 100 EUR depending on the operator. The actual charge amount replaces the hold within a few business days.
  • Some REWE charging operators offer roaming through networks like Hubject or Gireve. Your existing charging card or app from another network may work here.
  • Keep your payment card handy, not buried in your shopping bags. If the session stops unexpectedly, you may need to re-authenticate quickly.

Frequently Asked Questions

Can the MG MG4 charge at REWE Charging?
Yes. The MG MG4 uses a CCS2 connector, which is supported by REWE Charging chargers. Maximum charging speed will be up to 142 kW.
How long does it take to charge a MG MG4 at REWE Charging?
Charging a MG MG4 from 10% to 80% at REWE Charging takes approximately 25 minutes at up to 142 kW. Actual times vary depending on temperature, battery condition, and station load.
How do you pay at REWE Charging?
REWE Charging accepts app, contactless. Check the REWE Charging app or website for current pricing and subscription options.

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