The only major change in the traditional self-service business model has been the addition of in-bay automatic. Otherwise, the strategy of the industry has centered on protecting the model through technical measures and working in parallel with operators to protect those measures.
For example, foaming brush, clear-coat foam, spot-free, more efficient modular equipment and, more recently hand-held dryer and tire shine applicator.
Whether this approach has been successful might be echoed in your “I have kept my price the same and have had linear growth over the past few years.”
“How do we build the value in the product, space we sell and rent, in the future to grow?
Arguably, the search for new business models is the better way to go even though it may take some time and effort to identify them.
Is the one-price buffet model the answer? I’m sure that it will work in certain markets and for some sites. However, I believe that you have to consider that this model comes from a mindset that believes service consists mainly of accuracy and efficiency, the smile is optional.
Maybe you can find salvation with a dog wash. However, this has nothing to do with car-care.
That is why I advocate things like express in-bay or mini-tunnel, full-time professional attendant, not a part-time caretaker and
marketing.
My daughter is a junior in college. She drives a small hatchback with over 100,000 miles on it. She washes her car at wand-bays because she can’t afford or would she pay for a full-service wash. She spends about two hours a day on Facebook and Twitter. She shops a lot on the www. She doesn’t know very much about cars nor does she care to.
The county has a population of over 900,000. There are well over 45 car wash sites not counting gas stations. I can count on one hand the number of car wash businesses here that have a website and there is not one express exterior or high-speed in-bay wash within driving distance.
How can you expect to grow if you don’t reach your customers and satisfy their unmet needs?
Take a page from what the auto parts stores have done, put more service and
marketing in your business model and create more
loyalty customers.
Hope this helps.