AUTO
Buying a car is a negotiation. Mumm runs it for you.
Mumm contacts multiple dealers, runs them against each other on price, accessories, financing, and maintenance, and brings you the best out-the-door number. You walk in, sign, drive off.
Average savings
$3,800
off MSRP plus add-ons
Dealers contacted
5-8
per negotiation
Median timeline
6 days
PLAYBOOK
How Mumm runs this category.
01 · Lock vehicle spec: trim, options, color, financing preference, trade-in
02 · Pull regional invoice + holdback data for the model and trim
03 · Solicit out-the-door quotes from 5-8 dealers in a 100-mile radius
04 · Cross-leverage quotes; push the lowest two for accessories + warranty
05 · Stack maintenance package, extended warranty, and financing terms
06 · Confirm out-the-door number including all fees before paperwork
CASE STUDY
Six dealers, one out-the-door price.
- MSRP + add-ons
- $54,820
- Out-the-door
- $48,790
- Saved
- $6,030 (11%)
Day 1
User locks in spec: 2026 Toyota Highlander Hybrid Limited, blue, with a 4-year service plan.
Day 1
Mumm pulls regional invoice and holdback data; identifies a $1,200 negotiable margin baseline.
Day 2
Solicits out-the-door quotes from 8 dealers within a 90-mile radius.
Day 3
Cross-leverages the lowest two quotes; pushes for tinted windows and 5-year service.
Day 5
Best dealer commits to $48,790 OTD with windows, service, and 4.9% APR.
Day 6
User reviews. Approves. Picks up the car the next day.
WHAT YOU DON'T HAVE TO DO
Mumm handles every step you used to dread.
You used to have to
- Visit five dealers in person to feel out their numbers
- Pretend you would walk if the price didn’t move
- Get worn down by F&I add-ons in the back office
- Negotiate the trade-in while exhausted
With Mumm, you
- Tell us the spec; we collect 5-8 quotes in writing
- Cross-leverage the lowest two without leaving the couch
- See the full out-the-door number before you go in
- Drive off in a car priced the way the dealer would price a friend
DETAILS