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John Deere

Model # BG20709

Internet # 204652264

Store SKU # 1000024717

D125 42 in. 20 HP V-Twin Hydrostatic Front-Engine Riding Mower

This item has been discontinued.
The Home Depot no longer carries this specific product.

$1,799.00 /each


Model # BG20709

Internet # 204652264

Store SKU # 1000024717

The John Deere D125 riding lawn tractor is the premium 42 in. deck model of the D100 series line up. Step up to the D125 and experience a 20 HP V-Twin engine that offers more power and smoother operation. The hydrostatic transmission and 2 pedal foot control allows you to set your own pace while mowing forward and reverse with speeds up to 5.5 MPH. This tractor also delivers extra operator comfort with a high back seat and convenient cruise control. The 42 in. deck will give you a superior cut quality and is ready to side discharge, bag, or mulch.

  • Most orders process within 3 business days, product is shipped to your local John Deere dealer who will professionally inspect and deliver the unit to you within 7-14 business days, At delivery the customer will be taught by John Deere on how to operate and maintain the mower
  • 20 HP V-Twin John Deere branded engine for powerful performance
  • 42 in. deck offers a smooth underside to prevent grass buildup and the deep deck design lifts grass for a better cut, a wash port is included for your convenience cleaning the underside of the deck, the cut heights range from 1 in. to 4 in., in 1/4 in. increments
  • Full length welded steel frame and a cast iron front axle for added strength and long life
  • Hood is made of a uv-resistant John Deere Loy polymer that won’t fade, dent or rust, openings on side let in cooling air while keeping sound level low
  • High back seat easily adjusts while you are in the seat with travel of 5-1/2 in. and 10 different positions
  • Easy-to-use cruise control option maintains tractor’s speed for mowing larger areas
  • Several attachments available (sold separately) to help with projects around the yard: baggers, mulch plug, carts, aerators, spreaders, front blade and snow blowers
  • Home Depot Protection Plan:

    Home Depot Protection Plan

Info & Guides

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Assembled Depth (in.) 
68.75 in 
Assembled Height (in.) 
45.5 in 
Assembled Width (in.) 
53.9 in 
Front wheel size (in.) 
Mower Deck Width 
Rear wheel size (in.) 
Size of Yard 
1 - 2 Acres 
Turning radius (in.) 
CA (CARB) Compliant 
Not CARB Compliant 
Commercial / Residential 
Cutting Width (in.) 
Drive type 
Rear-wheel Drive 
Engine Displacement (cc) 
Engine Make 
OEM Branded 
Cruise Control,Cup Holder,Deck cleanout,Headlights,Hour Meter,Keyed start,Rust resistant deck 
Fuel tank capacity (gallons) 
Horsepower (hp) 
Engine oil 
Lawn Mower Type 
Front Motor Riding 
Maximum cutting height (in.) 
Maximum forward speed (mph) 
Maximum reverse speed (mph) 
Minimum cutting height (in.) 
Mulching Capability 
Number of Blades 
Number of Cylinders 
Twin Cylinder 
Number of deck wheels 
Oil capacity (oz.) 
Product Weight (lb.) 
436 lb 
Start Type 
Sloped with Obstacles 
Transmission Type 
Warranty / Certifications
Certifications and Listings 
No Certifications or Listings 
Manufacturer Warranty 
Two years or 120 hours, whichever occurs first 


Rated 4.5 out of 5 by 172 reviewers.
Rated 5.0 out of 5.0 by Just what we expected This is our first John Deere. We really like it. We aren't crazy about the reverse feature, (hold in a button, step down on the reverse pedal) but it doesn't take away from the quality and ease once you get used to it it's not all that bad. It does a nice job cutting. The gas gauge is in a good place, right below the seat, it's easy to read. It has a cup holder and covered compartment, headlights and the hose attachment is great for cleaning under the deck without getting everybody wet. Did I say it cuts nice? A nice even cut. Not a 0 radius turn but good enough. We love it! July 21, 2015
Rated 3.0 out of 5.0 by Rusts out before 300 hours I have less than 300 hours on this mower. Very well maintained, oil changes and complete tune up along with several waxes per year. I noticed this week that the paint is peeling away around the foot rest. When I looked under the mower, I noticed at every point that the foot rest clicks in, the mower is rusting out very bad. I figured since I was buying a John Deere, I was buying quality. Now I have a decision to make, buy a new mower or replace the whole body ( John Deere part number GY21284 - at a cost of $484.70 ). Also forgot to mention that the seat falls apart within the first year. I would be very hesitant buying this mower. August 26, 2015
Rated 5.0 out of 5.0 by Love the extra power I previously owned a D110 that had plenty of power for flat ground, but had to give it away as part of conditions in selling my former home. Our new lawn is a good bit larger, but also some pretty steep grades. This 20HP V-twin tackles it with no problem. Good cut in the thick bermuda as well. If you are looking at the 110 or 120, especially if you have any hills, go with the 125, you won't regret it. June 13, 2014
Rated 4.0 out of 5.0 by Open to a good opinion yet We live in the mountains of Colorado. Just got mine a couple of weeks ago. 3 acres of trees, rocks and meadow grass. It's just starting to warm up, but snow is flying again today. I've not cut any grass yet, but have towed a cart behind it moving some firewood and mulch, it it pulls it without any effort. It has a tight turning radious that I do appreciate navigating between trees and rocks. It's very quiet even at high engine rpms. I've owned the same size and hp in a cub cadet, and compared to it, this one already has it beat! The only suggestion I could offer to make it better, is get rid of the plastic brake handle. I see future problems with it in time. All othe features are great. I hope to enjoy it once it warms up and the grass starts to grow again. April 29, 2014
Rated 5.0 out of 5.0 by Great tractor so far Received it as described and in a timely manner. I added the bagger through my authorized John Deere delivery guy. Haven't had a single clogging problem yet and I still have the stock blades on there. Cuts like a pro and my yard is looking better then ever! Very happy with this purchase. I use to pay a lawnscaper, this tractor should pay for its self in about two years. May 20, 2014
Rated 5.0 out of 5.0 by This product meets and exceeds advertised features and descriptions. The JD 125 has exceeded my expectations. It is quite, comfortable, yet powerful enough to accomplish all of my outside landscaping needs. I needed a lawn tractor that I could use to move mulch and top soil as well as mow. It had to be stable on uneven terrain and this mower has performed exceptionally well. It has a tight turn radius, mows evenly from side to side, and pulls my lawn trailer with ease. April 30, 2014
Rated 2.0 out of 5.0 by It's great...except for the transmission I want to love this mower....really. I've had no issues with it cutting my 1 acre of grass and hauling firewood around in a gorilla cart. However, the weak link in these mowers is the transmission. I've only got 30 hours on mine and the transmission is starting to whine loudly, even on level ground with the mower deck disengaged. So I started looking online to see what can be done. Apparently, these transmissions fail a LOT and you need to remove it from the mower to change the fluid. I've owned this thing for a couple of months now and I took it to the local JD dealer to see if they could fix it. They're willing to fix it under warranty, but say that the transmissions are weak in this model and they change them a LOT. I was told to not tow anything and definitely don't use it to push snow or with a snow thrower (which I'd planned on doing). Sigh... There's a company that sells upgrade kits for this mower with a significantly better trans that doubles the torque, is rebuildable, and it's easy to dump and fill the fluid for routine maintenance without removing it. I'm likely to take that route rather than have JD put another faulty transmission in. Unfortunately, the cost for that upgrade is about what I paid for the mower. Before you buy one of these, do a google search on the KT66 transmission upgrade available. You'll see stories (like mine) of folks who had their "tufftorq" K40 transmission fail on them very early and with light usage. One last nit...the tires have relatively poor traction. Lug tires (assuming that doesn't blow up the trans even faster) would be a very good addition. It struggles on wet grass and easily gets stuck in loose leaves. Love the mower, in general, but I wouldn't recommend it because of the very weak transmission. January 11, 2015
Rated 5.0 out of 5.0 by great tractor for the money! I read reviews and researched subject before deciding on a twin cylinder. Less shaking and better durability from having 2 cylinders, a lot quieter than my 3 of my neighbors single cylinder tractors. I have a half acre lot with hill, 42" with 20 hp makes mincemeat out of chore of cutting the grass. Only problem so far is how to get warranty service. It came with a sticker for Middleton Service, over 3 days with about 12 phone calls and voice mails, no one ever returned phone call. For $6.00 in parts I fixed the problem myself. I would hate to have to depend on them for something serious. Other issue is running in the dark with headlights on killed the battery, so I had to charge it the next day.I had to jump battery for every start. Battery had defective cell, Deere only covers 1st 90 days before pro rating replacement. Nearest service centers 40 miles away. I got a free replacement and tractor is working fine now! The D125 has plenty of zip even on my hill, I wish I had more land so I could try out the cruise control. I got a mulch plug on clearance at Home Depot for $ 25.00. Saving up for a cart and bagging system. Who could imagine cutting the grass could be so much fun! July 24, 2014
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