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Deal.ai › John Deere
John Deere
John Deere 20 Horsepower 42-Inch Zero-Turn Mower

John Deere 20 Horsepower 42-Inch Zero-Turn Mower

Best price now

$3,399.00at Lowe'sChecked 1 h ago

Compared across 13 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission. Price via Klarna.

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Price facts

  • Lowest price today: $3,399.00 at Lowe's (checked Nov 11, 2026).
  • Checked at 13 stores.

Our take on the John Deere 20 Horsepower 42-Inch Zero-Turn Mower

The John Deere 42-inch zero-turn mower is a gas-powered residential rider with a 21.5 hp engine and a 42-inch rotary deck, sized for roughly two acres. Its zero-turn steering cuts mowing time on open lawns and around obstacles compared with a lawn tractor. The deck is narrower than the 48- and 54-inch decks on most zero-turns, so it fits tighter gates and beds but covers less ground per pass. It suits homeowners with mostly flat, open yards who want maneuverability without a big commercial machine.

Best forHomeowners mowing about two acresYards with many trees, beds and obstaclesBuyers moving up from a lawn tractorTight gates and narrow storage
Pros
  • Zero-turn steering turns sharply around obstacles
  • 42-inch deck fits narrow gates and beds
  • 21.5 hp engine handles regular mowing
  • Rotary deck gives a clean, even cut
  • Compact footprint for a zero-turn
Cons
  • Narrow deck means more passes than 48- or 54-inch models
  • Zero-turn controls take practice
  • Not built for steep slopes
  • Smaller deck limits productivity on wide open lawns

John Deere 20 Horsepower 42-Inch Zero-Turn Mower prices at every store

  • Lowe'sNew

    In stock

    $3,399.00Free shippingChecked 1 h ago
    Visit Lowe's
  • Atlantic Machinery TradersNew

    In stock

    $3,499.00Checked 1 h ago
    Visit Atlantic Machinery Traders
  • Cross ImplementPre-owned

    In stock

    $3,599.00Checked 1 h ago
    Visit Cross Implement
  • 21stcenturyequipment.comNew

    In stock

    $3,699.00Checked 1 h ago
    Visit 21stcenturyequipment.com
  • Everglades Equipment GroupNew

    In stock

    $3,699.00Free shippingChecked 1 h ago
    Visit Everglades Equipment Group
  • Koenig EquipmentNew

    In stock

    $3,699.00Checked 1 h ago
    Visit Koenig Equipment
  • Sydenstricker Nobbe PartnersNew

    Availability unknown

    $3,599.00Checked 1 h ago
    Visit Sydenstricker Nobbe Partners
  • Hartville HardwareNew

    Availability unknown

    $3,599.00Free shippingChecked 1 h ago
    Visit Hartville Hardware
  • trigreenequipment.comNew

    Availability unknown

    $3,949.00+ $50.00 shippingChecked 1 h ago
    Visit trigreenequipment.com
  • Fastline.comPre-owned

    Availability unknown

    $3,000.00+ $1,000,000.00 shippingChecked 1 h ago
    Visit Fastline.com
  • Home DepotNew

    Out of stock

    $3,586.47Free shippingChecked 1 h ago
    Visit Home Depot
  • WeingartzNew

    Out of stock

    $3,699.00Checked 1 h ago
    Visit Weingartz
  • CloudstoreNew

    Out of stock

    $3,675.00+ $2,000.00 shippingChecked 1 h ago
    Visit Cloudstore

Store links may earn us a commission. Some prices via Klarna.

John Deere 20 Horsepower 42-Inch Zero-Turn Mower price history

Lowest price we've seen: $3,399.00 on Nov 11 at Lowe's. Tracked across 11 stores since Nov 11.

About the John Deere 20 Horsepower 42-Inch Zero-Turn Mower

This John Deere zero-turn mower is gas-powered and has a 42-inch cutting deck. It uses a rotary blade system to cut grass.

It is intended for lawns up to 2 acres.

Type
Zero-turn mower
Power source
Gas
Blade system
Rotary
Cutting width
42-inch deck
Coverage area
2 acres

Specifications

Power Source
Gas
Blade System
Rotary
Cutting Width
42″ deck
Horsepower
21.5 hp
Coverage Area
2 acre coverage

Questions and answers

Is a 42-inch deck big enough for two acres?
It can handle two acres, but a 48- or 54-inch deck covers more ground per pass and finishes faster. The 42-inch deck pays off in tight gates and crowded beds.
How does it compare with a lawn tractor?
Zero-turn steering pivots in place, so it trims around trees and beds faster than a lawn tractor. The trade-off is a learning curve on the lap bars and less traction on slopes.
Is it good on hills?
Zero-turn mowers generally hold slopes worse than lawn tractors, and this compact model is best kept to mostly flat ground. Avoid steep banks.
What engine does it have?
It uses a 21.5 hp gas engine. That is enough for regular mowing with a 42-inch rotary deck.
Who is it for?
Homeowners with roughly two acres, many obstacles and narrow gates who want zero-turn maneuverability in a compact machine.
Where is the John Deere 20 Horsepower 42-Inch Zero-Turn Mower cheapest?
At Lowe's, for $3,399.00, as of our latest check.
Where can I buy the John Deere 20 Horsepower 42-Inch Zero-Turn Mower?
13 stores we checked sell it, including Fastline.com, Atlantic Machinery Traders, Home Depot, Sydenstricker Nobbe Partners, Cross Implement.

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Stores we've priced the John Deere 20 Horsepower 42-Inch Zero-Turn Mower at

  • Home Depot deals and prices
  • Lowe's deals and prices

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