IsItAGoodCar
Reliability Guide

Common Problems with the
2026 BMW i7 (G70)

The updated 7 Series range, including i7 models, was shown in April 2026 with the first UK cars expected from the autumn, so 2026 used stock straddles two hardware and software levels of the same generation.

What changed for 2026

  • •Facelifted 7 Series and i7 hardware announced in April 2026, reaching UK dealers after the pre-facelift cars
  • •Buyers in this window must identify the build date, because warranty terms and charging specification differ between the two revisions
  • •Software levels are mixed across 2026 stock, which is where camera, pairing and charging faults cluster

Common MOT watch-outs

  • !Mixed software levels between pre-update and post-update cars cause pairing, camera and charging faults
  • !Tyres and brake discs still wear quickly on a car of this weight
  • !Any failed height-control warning on the air suspension will show up as an advisory or a lighting fault
2
Known Issues
1
Serious
1
Moderate
0
Minor

All Known Issues

Adaptive air suspension is standard equipment and the biggest 7 Series claim category

SeriousSuspension & Chassis

The i7 rides on standard adaptive air suspension that can raise the nose by 20mm for steep drives and XXL speed bumps and lowers at motorway speed, with an optional active anti-roll system. That is also the region where 7 Series warranty money goes: suspension accounts for 33.9 per cent of claims on the nameplate with an average repair of £1,027, the largest single category by a wide margin. For a UK buyer the practical risks are perished air springs, failed height sensors, a compressor working too hard and salt-driven corrosion of the mountings around our wheel arches.

Est. Repair Cost: £600-£2,200 per corner for air spring or damper replacement
Warning Signs:

Car sits low on one corner after standing overnight, Suspension warning message or the system refusing to raise for a driveway, Compressor cycling repeatedly, or running when the car is parked, Harshness over speed cushions compared with the rest of the model

What to Inspect:
  • Cycle the suspension through every height mode on the viewing and listen for compressor labelling or hesitation
  • Ask for the height readings from a diagnostic tool and check the car sits level
  • Inspect the air spring bellows for cracking and the surroundings for winter salt corrosion
  • Confirm whether any suspension work is covered by remaining factory or certified warranty
Verified by IsItAGoodCar Research TeamUpdated

Software issues in the infotainment and driver assistance systems

ModerateElectrics & Electronics

Parkers' verdict on i7 reliability is that it is too early to comment on a relatively new electric platform but buyers should keep an eye out for software issues in the sophisticated infotainment system. Warranty data for the wider 7 Series family backs that up: electrical faults account for 16.5 per cent of claims with an average bill of £397, and carwow notes that BMW's overall reliability rating is improving but still trails Lexus. In practice that means screen reboots, dropped phone pairing, camera or assistance warnings and dealer software campaigns rather than broken parts, which are cheap individually and irritating in aggregate.

Est. Repair Cost: £0-£600 for diagnostics, module replacement or wiring
Warning Signs:

Curved display freezing, blanking or rebooting with no pattern, Reversing camera or 360-degree view slow or absent, Driver assistance features greyed out with a sensor or calibration warning, Charging or remote app functions that fail until the car is restarted

What to Inspect:
  • Ask for the current software level and whether all BMW service campaigns affecting the VIN have been applied
  • Test camera, sensors, phone pairing, wireless charging and voice control on a cold start
  • Check the 12V battery health, since low 12V voltage on EVs produces phantom electrical faults
  • Have an independent specialist read stored fault codes rather than accepting a cleared light
Verified by IsItAGoodCar Research TeamUpdated

Buying Tips for 2026 BMW i7 (G70)

  • Identify which hardware revision the car is by build date, not registration, because warranty and charging capability differ
  • Confirm the charging cable set and any software-based options are transferred with the vehicle