Last updated: 22 March 2026
Gas BBQ vs Charcoal: The Honest Comparison
Picture this: it is 6pm on a Tuesday, the kids are starving, and you are crouching over a chimney starter watching coals that refuse to catch. Forty minutes later you finally have heat. By then the family has eaten cereal. Now picture pressing a button, hearing the whoosh of ignition, and grilling burgers ten minutes later. That is the gas vs charcoal divide in one evening. But at the weekend, with time to spare and a rack of ribs, charcoal changes everything.
We spent an entire UK summer cooking the same meals on both a Weber Spirit II (gas) and a Weber Kettle Premium (charcoal), side by side in the same garden. Temperature logs, timing data and blind taste tests. Here is what the data shows.
The Honest Comparison
Convenience
Gas wins. Push button, wait 10 minutes, cook. No lighting, no waiting for coals, no ash cleanup.
Flavour
Charcoal wins on slow cooks. Ribs, brisket and pulled pork get genuine smoke flavour. For steaks and burgers, gas matches charcoal in blind tests.
Temperature Control
Gas wins. Turn a dial for precise heat zones. Charcoal requires experience to manage vents and coal placement.
Running Cost
Gas wins. £5 per session vs £10 per session. Over 20 summer BBQs, gas saves £100.
Cleanup
Gas wins. Burn off residue on high heat for 10 minutes, brush the grates. Charcoal needs ash disposal and deeper grate cleaning.
The Experience
Charcoal wins. Lighting coals, managing fire, the ritual of it. For many people, the process is the pleasure.
"If you cook outdoors more than once a week, gas will change your life. If you cook outdoors once a month and savour every minute of it, stick with charcoal. The best BBQ is the one you actually use."
— DJ BBQ (Christian Stevenson), BBQ author and YouTube presenter
Our Verdict
Buy gas if you value convenience, speed and low running costs. Buy charcoal if you love the ritual and cook mainly slow-and-low. Buy a hybrid BBQ if you want both. There is no wrong answer, only honest preferences.
The Science of Smoke Flavour
Charcoal flavour is not magic. It is chemistry. When fat drips from meat onto hot coals, it vaporises and creates flavour compounds (primarily guaiacol and syringol) that rise back up and coat the food. This does not happen on gas because the Flavorizer bars or heat plates are not hot enough to fully vaporise fat droplets. The fat burns off rather than creating aromatic smoke.
Dr. Greg Blonder at Boston University measured this effect precisely. At 300°C (charcoal temperature), fat droplets produce 4x more aromatic smoke compounds than at 200°C (typical gas Flavorizer bar temperature). This is why charcoal-grilled steaks have a distinct smoky depth that gas struggles to replicate on quick cooks. On slow cooks (2+ hours), the difference diminishes because the meat absorbs smoke from wood chips or chunks regardless of the primary heat source.
The UK Weather Factor
British weather is the X-factor that most BBQ comparisons ignore. We grill year-round in Surrey, and the weather affects gas and charcoal very differently.
Rain: Gas wins decisively. Rain does not affect gas flame underneath a closed lid. Charcoal struggles in anything beyond drizzle: damp coals take twice as long to light, and heavy rain can extinguish exposed coals entirely. We lost 3 charcoal sessions to rain over the summer versus zero gas sessions.
Wind: Charcoal actually benefits from moderate wind (better airflow = hotter coals), but strong gusts above 20 mph make temperature control impossible. Gas burners are shielded inside the firebox and handle wind up to 30 mph without issue. On the exposed side burner, wind causes problems above 15 mph.
Cold: Below 5°C, charcoal takes 50% longer to reach cooking temperature because the coals lose heat to the cold air. Gas BBQs using propane (not butane) are unaffected down to -40°C. For winter grilling in the UK, gas is the only practical option unless you enjoy standing in the cold for 45 minutes waiting for coals.
