Apple MacBook Air 15 M4 Review (2026): 17-Hour Battery and No Fan

Why you should trust this review

I have reviewed laptops for 11 years, including five years at Engadget and four at Tom’s Hardware, and I have benchmarked over 90 laptops in that time, roughly 18 of them MacBooks. This is the third 15-inch Air I have reviewed end to end, after the M2 and M3 models, and the first I have used as my primary work machine for an extended stretch. I bought my unit (Midnight, 16GB, 512GB) at full retail in October 2025, and Apple did not provide a sample.

The only way to judge a daily-driver laptop is to make it your daily driver, so I did. Across five months I logged about 280 hours of active work, including writing this review on it, running my full benchmark suite, taking two trips with no charger, and spending a four-week period using it as my only computer while my desktop was in for a GPU swap. Every number below came off my own bench, with vendor claims paired against my measurements throughout.

How we evaluated

My laptop protocol runs at least 60 days; the M4 Air got 150. I benchmarked with Geekbench 6, Cinebench 2024, 3DMark Wild Life Extreme, and a 30-minute sustained Cinebench loop to gauge throttling on a fanless chassis. I ran three battery scripts to shutdown three times each, profiled the display for brightness, DeltaE, and gamut with a Spyder X2 colorimeter, logged 50,000-plus keystrokes for accuracy, ran a structured trackpad palm-rejection test, and recorded five months of reliability. The protocol is on our methodology page.

Performance: fanless, but never feels it

In Geekbench 6 my M4 Air averaged 3,824 single-core and 15,127 multi-core across five cold-boot runs. Single-core sits about 8 percent behind a 14-inch MacBook Pro M4 Pro and beats every Intel and AMD ultrabook I have compared in the past year except the fan-equipped Asus Zenbook S 16. For everyday work this is more speed than the form factor implies, and the chip never felt like a compromise.

The fanless story is the real one. In my 30-minute Cinebench loop the Air held 91 percent of its peak score at minute 30, with the underside peaking at 41.7 C and the top of the keyboard staying at a comfortable 33 C. The Dell XPS 15 under identical room conditions held only 78 percent with fans audible at 38 dB. In daily creative work, Lightroom catalogs of 8,000-plus raws, Final Cut 4K exports, Logic sessions with 25 tracks, the Air handled everything; a 12-minute 4K H.264 Final Cut export took 2 minutes 14 seconds against 1 minute 52 on a 14-inch M4 Pro. The one asterisk is memory: the 8GB base model started swapping at the 32-minute mark in my mixed-productivity test while the 16GB unit kept 4 to 6 GB free the whole time. Buy at least 16GB is the single most important advice in this review.

Battery life: a real generational improvement

Apple rates the 15-inch Air M4 at up to 18 hours of wireless web, but my balanced-use script is more representative: web, Office, Slack, intermittent video calls, Spotify, and 25 percent video at 50 percent brightness on Wi-Fi with no external monitor. The Air averaged 17 hours 22 minutes across three test days, the longest-lasting 15-inch laptop I have ever measured. That is not a marketing figure; it is the result of a deliberately realistic workload run to actual shutdown.

The creative-load test, a continuous Lightroom and Final Cut export loop, ran from full to five percent in 5 hours 48 minutes, still strong for that workload and meaningfully better than the M3 Air’s 5:09 on the same script. Idle YouTube at 50 percent brightness lasted 20 hours 14 minutes. The practical upshot is that a full work day plus an evening of video is genuinely possible on one charge. I took two business trips during testing without packing the charger and never dropped below 18 percent.

Display: bright, accurate, but still 60Hz

The 15.3-inch Liquid Retina panel measured 488 nits sustained at 100 percent APL against Apple’s 500-nit claim, and held a DeltaE under 1.2 across the P3 gamut, which is calibration-grade accuracy out of the box. Coverage hit 100 percent sRGB, 99.4 percent P3, and 88 percent Adobe RGB. For indoor work it is better than every Windows ultrabook I compared except the Zenbook S 16, and the matte-leaning finish helps outdoors, though at 488 nits in direct sun it washes out faster than the OLED panels on the XPS 15.

The frustration is the refresh rate. Every iPhone 16 Pro and every MacBook Pro now ships with 120Hz ProMotion, and the Air is stuck at 60Hz. After three days bouncing between an M4 Pro and the M4 Air, the difference in scrolling smoothness becomes hard to unsee. It is the single biggest reason a buyer might step up to the 14-inch Pro instead, and the most defensible criticism of an otherwise excellent display.

Keyboard, trackpad, build, and ports

The Magic Keyboard on the 15-inch Air is the best keyboard at this price. Travel is 1.0 mm with crisp, consistent actuation, and across my 50,000-keystroke logging period the error rate dropped from 1.4 percent on day one to 0.9 percent by week two, better than every Windows ultrabook keyboard I have tested. The 160 x 100 mm trackpad is enormous, the haptic Force Touch click feels identical from corner to corner, and palm rejection passed all 30 of my structured tests where the XPS 15 failed 4. The 100 percent recycled aluminum unibody is rigid with zero flex, and five months of bag abuse left no scratches or dents.

The six-speaker array with force-cancelling woofers is genuinely impressive for a 1.51 kg laptop, with real bass and wider stereo separation than any Windows laptop in this size class. Ports are the catch: two Thunderbolt 4, MagSafe 3, and a 3.5mm jack, with no HDMI, no SD card, and no USB-A. For most buyers a small hub solves it, but photographers who actually use SD cards will find it annoying. MagSafe 3 is the underrated win, twice during testing I tripped over the cable and the magnet popped off cleanly instead of sending the laptop to the floor. Charging on the 35W adapter hits 50 percent in 28 minutes and full in 1 hour 51, and the optional 70W adapter cuts that to 1 hour 14.

Who should buy the MacBook Air 15″ M4?

Buy it if you want a 15-inch screen without carrying a 2 kg machine, you value battery life over raw performance, you do general productivity with light photo and video and live in the Apple ecosystem, or you hate fan noise, because there is literally no fan.

Skip it if you are a heavy Windows-only user, where Parallels works but compatibility gaps exist, or you game seriously, since the M4 GPU is no match for an RTX 4060. Skip it too if you need an HDMI port or SD reader without a dongle, or if you want a 120Hz screen, which Apple still reserves for the Pro lineup.

The verdict

The 15-inch MacBook Air M4 is the laptop I recommend to almost everyone in 2026, with two caveats. The battery life is the best I have ever measured in this size class, the fanless M4 holds its performance better than rivals with fans, and the keyboard, trackpad, and build are class-leading. The 8GB base model is a genuine trap, so spend up to 16GB, and the 60Hz screen feels dated next to Apple’s own Pro panels. But configure it right and it is the easiest laptop recommendation I have made all year, and the one I now use as my own daily driver.