Independent comparisons. We may earn from shop links. More info

Grill motor buying guide

Updated: 23 October 2026

The motor on the side of the gas barbecue has died, or the spit is still a bare rod. A grill motor buying guide is the order of checks, not a basket sorted by stars. Measure the square end, then the bracket, then the supply, then the balanced load the seller prints. The [grill motor comparison](/hub/grills-and-barbecues/grill-motor) holds the ten amazon.co.uk listings we kept, with row prices in GBP from 21 October 2026. We did not run a lab load test. If you have already measured an 8 mm square and want one mains default, that choice is on the [best grill motor](/hub/grills-and-barbecues/grill-motor/sub/grill-motor-best) page.

The motor on the side of the gas barbecue has died, or the spit is still a bare rod. A grill motor buying guide is the order of checks, not a basket sorted by stars.

Our top picks

onlyfire onlyfire F-BRMA212-PE1-UK, mains

Best overall

onlyfire onlyfire F-BRMA212-PE1-UK, mains
9.2/10about £23.99
View offer
onlyfire onlyfire Cyprus motor, 6.4 mm

Alternative

onlyfire onlyfire Cyprus motor, 6.4 mm
7.6/10about £21.99
View offer
WPKD BLUEIY WPKD BLUEIY, 1.5 V D cell

Alternative

WPKD BLUEIY WPKD BLUEIY, 1.5 V D cell
6.4/10about £11.02
View offer
On this page
  1. 1.Measure the spit and the bracket
  2. 2.Match the supply
  3. 3.Read the stated load and the speed
  4. 4.What this set can and cannot tell you

Measure the spit and the bracket

Start with the end that enters the motor. An 8 mm square and a 5/16 inch square are the same family here, because 5/16 inch is 7.9 mm and the listings treat it as the standard gas-grill spit. A 6.4 mm square is the Cyprus-style onlyfire. The WPKD prints 6.5 mm. If your rod measures 6.4 mm, follow the Cyprus grill motor page rather than forcing an 8 mm coupling on. The bracket line is messy. B071L4GFJ6 states the mount as 3 inch (7.6 mm). The stainless sisters state 3 inch (7.6 cm). Three inches is 7.6 cm, so one string is a unit error, and we will not guess which. If a new bracket means drilling beside a gas hose, stop.

Match the supply

Once the metal matches, choose the supply. The home mains rows state 220–240 V. Several onlyfire titles claim a UK 3-pin plug. The files do not show the pins, so the claim stays a title line until the parcel arrives. A Schuko-only plug is a buying failure on a British patio. Outdoor mobile equipment on the mains wants a 30 mA RCD under BS 7671 regulation 411.3.3. A 1.5 V D cell, the WPKD at about £11.02 or the Tiiyee at about £14.59, sits outside the Electrical Equipment (Safety) Regulations 2016, which cover 50–1,000 V AC or 75–1,500 V DC. None of the ten rows prints an IP rating.
onlyfire onlyfire F-BRMA212-PE1-UK, mains

Testsieger

onlyfire onlyfire F-BRMA212-PE1-UK, mains
9.2/10about £23.99
View offer

Read the stated load and the speed

The kilogram line is a seller figure for a balanced load, not a weight we hung on a spit. The WPKD states about 2–3 kg. The 8 mm onlyfire mains motors state up to 15 kg or, on the dearest of the three, up to 18 kg. The MX-S40 states 40 kg at about £49.99. A joint that is heavy on one side can stall a motor whose label would have covered the same kilograms if the mass were centred. Napoleon’s UK article puts a useful speed at about 3 to 6 RPM. The Tiiyee’s 0–5.0 kgf·cm is torque, not a chicken weight.

What this set can and cannot tell you

Review depth comes after the metal and the supply match. B071L4GFJ6 shows 4.6 from 164 reviews. A 5.0 from one review is a thinner file. Stars are the marketplace rating. The comparison score of 92 is 4.6 scaled to 100. A “CE Certified” bullet is wording we did not check. Great Britain’s guide accepts UKCA or CE. Northern Ireland stays with CE. The mark does not fill a blank RPM or a blank plug photo. This page does not name a single winner. If the measurements match an 8 mm mains motor, the fitting order is on how to fit a grill motor.

Common questions

What do I measure on the spit before I order?
Measure the square end that enters the coupling, across the flats, in millimetres, then the bracket or slide, including clearance from the lid. Write both numbers down before you compare stars. An 8 mm reading, a 6.5 mm reading and a 6.4 mm reading are three different parts in this set. A motor bought for the wrong square will not seat.
Is 5/16 inch the same as 8 mm, and is 6.4 mm close enough?
5/16 inch is 7.9 mm, and these listings treat it as the 8 mm gas-grill square. 6.4 mm, on the Cyprus row, is a different part. 6.5 mm, on the WPKD, is a third size. Measure the rod you own. Filing the end to make a near miss fit is how the coupling fails on the first cook.
What does a 3 inch motor mount mean if one listing says 7.6 mm?
B071L4GFJ6 prints 3 inch (7.6 mm). The stainless 15 kg and 18 kg listings print 3 inch (7.6 cm). Three inches equals 7.6 cm, so the strings disagree, and we do not pick a winner. Measure your bracket. The MX-S40 leaves the mount cell empty, so the 40 kg row does not answer the bracket question either.
Do I need a UK 3-pin plug, or is a D cell enough?
A 220–240 V motor for a patio socket needs a UK 3-pin plug. Several onlyfire titles claim one. Confirm the pins in the box. A single D cell, as on the WPKD at about 2–3 kg, is a light-load motor outside the 2016 voltage band. It matches a 6.5 mm shaft. Outdoor mains use still wants a 30 mA RCD.
What does “up to 15 kg” mean if the meat is not balanced?
It is the seller’s ceiling for a balanced load, not a weight we tested. Napoleon’s UK note puts home rotisserie speed around 3 to 6 RPM and treats balance as part of cooking. A 15 kg label can still stall if one side of the bird hangs low. The same caution applies to the 18 kg and 40 kg claims.
Does a “CE Certified” bullet mean the listing was checked?
It means the seller typed that phrase. We did not open a technical file. For Great Britain, the guidance allows UKCA or CE on this kind of product. Northern Ireland looks for CE, and a UKCA-only mark is not that route. The bullet does not fill a missing IP rating, a missing RPM, or a missing photograph of the plug pins.

Related pages

Mains or battery grill motor

Grill motor

Best grill motor: the 8 mm mains with 164 UK reviews

Cyprus grill motor: a 6.4 mm foukou drive, not 8 mm

How to fit a grill motor: bracket, balance and probe

Sources

Public UK sources used for this comparison. Listing prices, stars and review counts are the amazon.co.uk figures for these ASINs. Retrieved 22 October 2026.

  1. GOV.UK: Electrical Equipment (Safety) Regulations 2016, Great Britain (retrieved 22 October 2026)
  2. The Electrical Equipment (Safety) Regulations 2016, SI 2016/1101 (retrieved 22 October 2026)
  3. Electrical Safety First: garden safety (retrieved 22 October 2026)
  4. IET Wiring Matters: 30 mA RCD protection under BS 7671 regulation 411.3.3 (retrieved 22 October 2026)
  5. Food Standards Agency: cooking your food (retrieved 22 October 2026)
  6. Napoleon UK: how rotisserie cooking works (retrieved 22 October 2026)
  7. Consumer Rights Act 2015, section 22 (retrieved 22 October 2026)
  8. GOV.UK: accepting returns and giving refunds (retrieved 22 October 2026)