X7 vs QX80
Compare two new cars by price, estimated monthly payment, fuel economy, and other specifications. Data comes from the CarPayCheck.com catalog and uses your selected financing terms.
QX80
Specifications
| X7 | QX80 | |
|---|---|---|
| Manufacturer | BMW | Infiniti |
| Starting price | — | — |
| Monthly payment | — | — |
| Fuel type | Hybrid | Gasoline |
| Fuel economy | 18.0 mpg | 17.5 mpg |
| CO₂ emissions | 386 g/mi–505 g/mi | 504 g/mi–521 g/mi |
| Annual maintenance cost | — | — |
Common issues
BMW X7
The BMW X7 has several documented problems, with the most common being rear air suspension leaks, Valvetronic actuator faults, cooling system leaks, premature front brake rotor pulsation, and battery drain. These issues affect various model years from 2019 to 2023, leading to symptoms like suspension collapse, engine power loss, coolant loss, brake vibration, and dead batteries. Ignoring these problems can lead to more severe damage, such as compressor burnout, engine overheating, or starting failure.
Yes, the BMW X7 (especially 2019-2021 models) commonly experiences rear air suspension leaks, leading to the vehicle sitting low, particularly on one rear corner. This triggers a 'Chassis malfunction' or 'Level control malfunction' warning, and if ignored, the air compressor may burn out. Replacement of a rear air spring typically costs between $1,200 and $3,200 depending on the service provider.
The Valvetronic actuator and eccentric shaft fault is common in 2019-2021 BMW X7 xDrive40i models with the B58 engine. Symptoms include check-engine light, rough idle, loss of power, and limp mode. The repair typically costs between $1,200 and $3,500, with independent shops at the lower end and dealerships at the higher end.
Cooling system issues, particularly with plastic components, are common in 2019-2021 X7s with the B58 engine. Symptoms include frequent 'low coolant' messages, coolant puddles, and overheating if ignored. Repairing the expansion tank and hoses costs $400-$900, while replacing the electric water pump can cost $900-$1,700.
Premature front brake rotor pulsation, causing vibration in the pedal and steering wheel, affects many 2019-2023 X7s, especially V8 models. The issue is likely due to the vehicle's weight and brake pad bedding. Replacing front rotors and pads costs $850-$2,500, depending on the shop (independent versus dealer).
Battery drain in 2019-2021 BMW X7s with iDrive 7 often results from modules not entering sleep mode, causing the battery to die after a few days of sitting. This can lead to no-start situations and repeated jump starts, harming the AGM battery. Diagnosis costs $200-$400, an AGM battery replacement is $500-$800, and a module software update can cost $300-$600.
Infiniti QX80
The rear air springs can leak, causing the vehicle to sag and the compressor to overwork and fail. Symptoms include a 'Suspension Fault' warning, continuous compressor cycling, and a noticeably lower rear end. If ignored, the compressor can burn out and the rear axle may bottom out, affecting ride quality and safety. Repair typically involves replacing both rear air springs and possibly the compressor.
The Jatco 7-speed automatic can develop a shudder or harsh shifting due to degraded transmission fluid or valve body wear. Symptoms include vibration during upshifts, hesitation, and clunking. Ignoring it can lead to valve body failure or internal damage. A fluid flush and TCM reflash may fix it early, but a valve body replacement or new transmission might be needed.
The InTouch dual-screen system can freeze, show a black screen, or become unresponsive, sometimes blocking the backup camera. This is often due to software bugs or failing hardware. A hard reboot may temporarily fix it, but the head unit may need replacement. Since the backup camera is affected, this is a safety concern.
A parasitic draw from the telematics or body control module can deplete the battery within days, even when new. Symptoms include needing frequent jump starts and overnight voltage drops. Diagnosis involves testing parasitic draw and may require reprogramming or replacing the faulty module. Expect to pay for battery replacement and diagnostic labor.
The power liftgate motor or actuator can fail, causing the tailgate to stop midway, not respond to buttons, or make clicking noises. This is often due to a stripped gear or leaking strut. Without repair, the liftgate may become stuck, making manual operation very difficult. Replacing the actuator motor costs a few hundred to over a thousand dollars.
About this comparison
BMW X7 and Infiniti QX80 suit different driving needs. The main differences below cover price, monthly payment, fuel economy, and running costs.
The models use different powertrains: X7 — Hybrid; QX80 — Gasoline. The better choice depends on your daily route and access to charging.
The final choice is about more than numbers: annual distance, city or highway use, and the space your household needs all matter. Use the CarPayCheck.com calculator to apply your financing terms and evaluate both cars in your situation.
Want to compare other models? Return to the full catalog or calculate financing using your own terms.