Behind the brand badge
The engine matters more than the badge.
A Mountfield with a Honda engine, a Cobra with a Briggs, a Stihl with a Kawasaki — the engine maker is often a different company to the brand on the deck. Here's a plain-language guide to who makes the engine inside your mower, and what that means for reliability and parts.
Briggs & Stratton
The most-fitted engine in domestic mowing
Focus
Single-cylinder OHV petrol — 100cc to 700cc
B&S engines turn up everywhere. The 450E, 500E, 750EX and 875EX series are fitted to roughly half the petrol mowers sold new in the UK — Mountfield, Cobra, Hyundai, Hayter, AL-KO, Murray, Cub Cadet and many more all use them. Parts are available at every garden machinery dealer and most online suppliers within 24 hours. Reliability is good but not exceptional — expect 8 to 12 years on a domestic mower.
What buyers should know
B&S filed for bankruptcy in 2020 and was acquired by KPS Capital Partners. The brand and parts supply continue. Most B&S issues are stale fuel and varnished carbs from winter storage; both are cheap to fix.
Fitted to:
MountfieldCobraHyundaiAL-KOHayterMurrayCub CadetWestwood
Honda
The benchmark for domestic petrol reliability
Focus
GCV (residential) and GXV (industrial) OHC/OHV petrol
Honda's GCV series — particularly the GCV145, GCV170 and GCV200 — is the engine that defines premium walk-behind petrol mowers in the UK. Fitted to the entire Honda HRG and HRX range, plus the Hayter Harrier (which uses a Honda GCV under the deck), and offered as an upgrade option on the Mountfield SP46H. The GXV is the heavy-duty industrial sibling used on professional and ride-on equipment.
What buyers should know
Honda engines genuinely outlast their host machines. A 15-year-old GCV145 will start on the second pull if it has been serviced. Honda owners rarely sell because the engines refuse to die — that's why used Hondas hold value better than any rival.
Fitted to:
HondaHayter (selected)Mountfield (SP46H)Countax (selected)
Kawasaki
Pro-grade engine of choice for commercial mowers
Focus
FJ, FR, FS and FX series V-twin and single-cylinder
Kawasaki engines are what professional landscapers and commercial groundsmen run on. The FJ180V single is fitted to walk-behind commercial mowers (Stihl RM 4 RTP and similar); the FR and FS V-twins power most American zero-turn ride-ons sold in Europe. Built to run 8 hours a day for 2000+ hours.
What buyers should know
You won't see Kawasaki on a domestic Mountfield or Cobra — they're reserved for premium and commercial machinery. If a mower lists a Kawasaki engine, the price will reflect it. Worth the premium for buyers cutting more than two acres.
Fitted to:
Stihl (commercial)John Deere (selected ride-on)Toro (commercial)
Kohler
American premium for ride-on tractors
Focus
7000 Series, Command Pro, Confidant V-twin petrol
Kohler engines power the higher-end American ride-ons sold in the UK — particularly the Cub Cadet XT2/XT3 series. The Command Pro and 7000 Series are robust V-twins designed for 500-plus annual hours; the Confidant is the entry residential V-twin. Build quality is closer to Kawasaki than to Briggs.
What buyers should know
Parts in the UK come through Cub Cadet dealers and a handful of specialist suppliers. Costlier per part than B&S, faster to source than the rarer Kawasaki components.
Fitted to:
Cub CadetJohn Deere (selected)Husqvarna (selected ride-on)
Stiga (ST series)
The engine inside almost every Mountfield
Focus
ST120, ST140, ST160, RV150, RV170 OHV petrol singles
Stiga's in-house engine division builds the engines fitted to nearly every Mountfield, Stiga and Atco walk-behind petrol mower sold in Britain. The ST120 and ST160 are the workhorses — reliable for 6 to 10 years of typical UK use. Parts are available at any Stiga or Mountfield dealer.
What buyers should know
Not as robust as a Honda GCV but considerably cheaper to buy and to repair. Most ST-series faults are fuel-related and resolved with a £35 carb clean.
Fitted to:
MountfieldStigaAtco (selected)
Stihl EVC / Kohler EVC
Stihl-branded petrol engines for the RM range
Focus
EVC 200, EVC 300 OHV petrol singles
Stihl badges its own petrol engines on the RM 248, RM 253, RM 448 series. Some are Stihl-built; others are sourced from Kohler in the US under a Stihl part number. Either way, dealer-only parts and a slightly higher service cost than Briggs or Stiga.
What buyers should know
Stihl chassis numbers tie into their dealer network for service history. A Stihl-serviced mower carries a £50–£80 used premium over an undocumented one — worth confirming before paying.
Fitted to:
Stihl
Husqvarna HQ
In-house engines for Husqvarna walk-behind petrol
Focus
HQ745, HQ800 OHV singles
Husqvarna's HQ-series engines power the LC-range walk-behind petrol mowers (LC 247SP, LC 348V, etc.). Designed in Sweden, manufactured in China, badged Husqvarna. Performance is on par with a Stiga or B&S; parts come through Husqvarna dealers only.
What buyers should know
Husqvarna engines come with chassis-locked warranty. Out of warranty, parts are dealer-priced — typically 30 to 50 percent more than the Briggs equivalent.
Fitted to:
Husqvarna
Loncin
Generic OEM behind dozens of UK budget brands
Focus
Loncin G-series 99cc to 200cc OHV singles
Loncin manufactures the engines fitted to most sub-£300 petrol mowers sold under brand badges like Webb, Hyundai, Mac Allister, and many supermarket-exclusive lines. Capable but disposable — five to eight years of typical use is realistic.
What buyers should know
Parts are available online through generic small-engine suppliers, not always through the host brand's dealer network. The Loncin name is rarely on the engine — you have to look for the GX-style code on the side cover to identify it.
Fitted to:
WebbHyundaiMac AllisterHyundai-badged budget
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