Best Key Start Petrol Lawnmower Deals Online in the UK (10 Deals Found)

Last Updated - 04/10/2026 Sort By:

Best Choice
SPECTRUM

New
Spectrum TG40SE Petrol Lawnmower 40cm Self Propelled Electric Start 40L
139CC PETROL ENGINE: Powered by a reliable petrol lawnmower engine with 139cc displacement, this mower produces 3.7HP (2

£249.95
Best Value
HYUNDAI

New
Hyundai 17"/42cm 139cc Electric-Start Self-Propelled Petrol Lawnmower with 3 Year Warranty
Petrol Lawn Mower For Medium-Large Lawns: A low-maintenance, self-propelled petrol lawn mower with electric-start, ideal

£275.39 £323.99
HYUNDAI

New
Hyundai 51cm 196cc Self-Propelled Petrol Lawn Mower, Electric Start, 360° Easy-Turn Front Wheels, 4 Speeds, 3-in-1, 70L
Powerful petrol lawn mower: 196cc Hyundai OHV 4-stroke engine and wide 51cm / 20" cutting width, ideal for medium to lar

£469.99
CENPEK

New
CENPEK Lawn Mower Starting Ignition Switch Mower Starter Key Lawn Mower Switch 5 Spade Terminal Engine Start Switch Repl
These universal ignition switches are made of high-quality aluminium, durable and long service life. It can the old / ta

£8.99
HYUNDAI

New
Hyundai 18"/46cm 139cc Electric-start Self-propelled Petrol Lawnmower, 6 Adjustable Cutting Heights, Large 70l Grass Bag
460mm / 18" cutting width: Ideal for medium to large lawns

£369.99
10% Off
HYUNDAI

New
Hyundai 22” 56cm Electric Start Self-Propelled Petrol Lawnmower, Powerful 196cc 4-Stroke Engine, Mulching & Discharge, 7
Push-Button Electric Start with Recoil Backup: Instantly start the mower with no pulling or strain, with pull-start incl

£359.99 £399.99
11% Off
HYUNDAI

New
Hyundai 17” 43cm Electric Start Self-Propelled Petrol Lawnmower, 139cc 4-Stroke Engine, 4-in-1 Mulch Bag Side & Rear Dis
Push-Button Electric Start with Backup Recoil: Instantly start the mower at the press of a button with pull-start includ

£249.99 £279.99
HYUNDAI

New
Hyundai 17" (42cm) Petrol Self-Propelled Lawnmower – 139cc 4-Stroke Engine, Recoil Pull Start, 5 Cutting Heights, 45L Gr
139cc 4-Stroke Hyundai Engine 3.7hp: Reliable performance and low fuel consumption for efficient grass cutting on small

£249.99
HYUNDAI

New
Hyundai 16" / 40cm Petrol Lawnmower, 139cc 4-Stroke Engine, Hand Push, 7 Cutting Heights 25-75mm, 40L Grass Bag - 3 Year
Reliable 139cc Petrol Engine – Powerful 4-stroke petrol engine delivers consistent cutting performance for small to medi

£159.99 £174.99
Mountfield

New
Mountfield Petrol Lawnmower HP41, 39 cm – 123 cc, 40 L Collector, Foldable Handlebar – Lawns up to 800 sqm
A MODEL FOR EVERY NEED - The STIGA 123cc engine delivers reliable power for consistent cutting performance on small to m

£164.00

10 Key Start Petrol Lawnmower deals are available from: Amazon stores, starting from £8.99.
The biggest discount we found is 15% on Hyundai 17"/42cm 139cc Electric-Start Self-Propelled Petrol Lawnmower with 3 Year Warranty at Amazon.
The lowest price we found is £8.99 while the highest is £469.99.
Prices for the best Key Start Petrol Lawnmower deals average at £255.83.
Last updated on October 4, 2026.
We scanned these quality online stores and more to deliver you with the best offers online available for Key Start Petrol Lawnmower.