Mechanical Engineering Comparison: UCLA vs UC Davis vs Cal Poly SLO — UC Davis and Cal Poly lead on fit and cost; UCLA is a long reach

Executive Summary

Interpretation: One senior (3.8 unweighted GPA, SAT 1400, California resident, household income $90k, $25k/yr ceiling) applying for fall 2027 freshman entry to mechanical engineering (ME). Net costs are estimates because no school's net price calculator was run (the brief forbids submitting one).

Summary: UCLA ME is a reach (3.9% admit rate); UC Davis is the most realistic UC option but I found no ME-specific admit rate; Cal Poly SLO is the best match for "mid-size" and hands-on engineering, but its engineering admits skew to very high weighted GPAs and it likely costs the most after aid.

Three facts shape the whole comparison:

Cal Poly is not a UC campus. Its application runs through Cal State Apply, not the UC application (Cal Poly dates). The student needs two separate applications.
The SAT 1400 will not help at UCLA or UC Davis. UC stated in 2020 (fall 2021 onward; confirm it still applies for fall 2027) that it will not consider SAT or ACT scores in admissions decisions (UC Regents release, Nov. 2020 update). Cal Poly's 2024-25 enrolled-class middle 50% SAT was 1240-1420, so 1400 sits inside it, but only 27.5% of enrolled first-years submitted SAT scores (collegedata.fyi, Cal Poly CDS 2024-25). Cal Poly's selection page says GPA and test scores "(when applicable)" matter (Cal Poly selection criteria); I could not confirm from a fetched page whether scores are used in selection.
Admission is mostly about GPA and major. Cal Poly selects within major and uses the 9th-11th grade weighted GPA (Cal Poly selection criteria). Only your unweighted GPA is known, so the weighted GPA is the missing input for odds.

Side-by-Side Comparison

School/program	Type	Rating or performance data	Key requirements	Admit odds	Estimated net cost	Deadlines	Outcomes	Notable programs	Distance or commute	Fit label	Sources
UCLA – Mechanical Engineering (Samueli)	Public university (UC)	Fall 2025 ME: 6,083 applicants, 3.9% admit rate; admits' middle range 4.54-4.83 weighted GPA (UCLA labels these 25th/75th % for admits) UCLA Fall 2025 profile by major. Campus overall 2024-25: 9.0% admit rate collegedata.fyi	UC A-G courses; major is considered for engineering (UCLA says major is not considered only for The College) UCLA profile; SAT not considered UC	Reach (est.): a 3.8 unweighted GPA is likely below the 4.54 weighted 25th percentile; basis is the 3.9% ME admit rate	Scorecard average net price $12,548 (all incomes, 2022-23 vintage, not the $90k band) collegedata.fyi. Likely under $25k (est.); see cost section	UC application filing period closes Nov 30 (start date: confirm on the UC page, which is ambiguous); decisions in March 2027 UC dates	6-yr graduation 93%; median earnings $82,511 at 10 yrs (all majors; ME-specific not found) collegedata.fyi	ME-specific program details not retrieved (UCLA ME page returned no usable content)	Campus city only: Los Angeles	Partial fit: strong net cost, but large (33,040 undergrads, UCLA facts) and a long shot	as cited
UC Davis – Mechanical Engineering	Public university (UC)	Fall 2025 campus: 120,131 applications, about 46.3% offered admission UC Davis news. 2024-25 first-year admit rate 41.8% collegedata.fyi. ME-specific admit rate not found	UC A-G courses; UC Davis advises applying to the major you want and listing an alternate UC Davis tips; SAT not considered UC	Target-to-Reach (est.): campus-wide admit rate is 42-46%, but ME/engineering selectivity was not found, so this is a low-confidence label	Scorecard average net price $14,741 (all incomes, 2022-23 vintage) collegedata.fyi. Likely under $25k (est.)	Same UC dates as UCLA UC dates	6-yr graduation 86%; median earnings $80,838 at 10 yrs (all majors) collegedata.fyi	Required senior design capstone (EME 185AB), completed in the final Winter and Spring quarters UC Davis MAE	Campus city only: Davis	Good fit: realistic odds, low net cost; campus is large (39,414 students total, UC Davis facts)	as cited
Cal Poly SLO – Mechanical Engineering	Public university (CSU, not UC)	College of Engineering, 2025 preliminary: 21,393 applied, 5,008 selected (about 23.4%, my arithmetic), target 1,409, selected GPA range 4.14-4.25 Cal Poly profile. ME-specific rate not found	Declare major at application; CSU college-prep course pattern (check Cal Poly's high school course requirements page); weighted 9th-11th grade GPA Cal Poly selection	Reach-to-Target (est.): engineering-wide admit rate is about 23%, but selected GPAs of 4.14-4.25 are weighted, and the student's weighted GPA is unknown	Scorecard average net price $16,665 (all incomes) collegedata.fyi; published 2026-27 on-campus COA for Engineering $44,144 Cal Poly 2026-27 costs. Under $25k not assured	Cal State Apply Oct 1-Nov 30 (year not stated on the page) Cal Poly dates	6-yr graduation 86%; median earnings $90,768 at 10 yrs (all majors) collegedata.fyi	"Learn by Doing" curriculum; junior/senior concentrations include General, HVAC&R, Manufacturing, Mechatronics Cal Poly ME	Campus city only: San Luis Obispo	Strong fit on size and style (23,245 students, 19:1 ratio) Cal Poly facts; cost is the risk	as cited

ABET accreditation: not confirmed for any of the three from a fetched page (see Open Risks). Scorecard figures are 2022-23 vintage and averages across all incomes; earnings and graduation rates are for all majors.

Net Cost: Can Each School Fit Under $25k?

UC campuses (UCLA, UC Davis). UC's published system-wide average cost of attendance for California residents is $49,078 on campus and $48,678 off campus, on a table labeled 2027-28; tuition is $16,278 and campus fees $1,900 (UC cost of attendance). UC's Blue and Gold plan says most California families earning up to $100,000 receive enough grant and scholarship funds to cover UC tuition, and average aid packages include up to $22,000 in grants and scholarships (UC Blue and Gold). Illustrative arithmetic (estimate, not a quote): $49,078 − up to $22,000 = about $27,000 before work or loans, which is above $25k if the full average grant is not received. The Scorecard average net prices ($12,548 UCLA, $14,741 UC Davis) are far lower but blend all income levels, so they do not prove the $90k band lands under $25k. I could not retrieve campus-specific COA or net price by income band.

Cal Poly. The published 2026-27 on-campus COA for the College of Engineering is $44,144 (residence hall $41,342; living with family $35,380), including $15,720 tuition and fees (Cal Poly 2026-27 costs). Cal Poly's Scorecard average net price is $16,665 (collegedata.fyi). Whether Blue and Gold-type tuition coverage exists at Cal Poly was not found; the family should run Cal Poly's net price calculator (Cal Poly cost pages). Eligibility for Cal Grant and other state aid is for each aid office to rule on; I make no ruling.

Caveat on staleness: the UC cost table's "2027-28" label differs from the other cost tables I retrieved (Cal Poly 2026-27), so the years are not strictly comparable.

Ranked Shortlist

UC Davis ME: the likeliest admit of the three on campus-wide numbers (42-46% admitted), covered by UC's income-linked aid, and has a required capstone. Weakness: large campus, and ME-specific odds unknown.
Cal Poly SLO ME: best on mid-size preference and hands-on identity; engineering-wide selectivity is about 23% and costs may exceed $25k without aid. Apply as a strong target-or-reach.
UCLA ME: lowest net price by Scorecard average and strongest outcomes data (93% graduation), but a 3.9% ME admit rate makes it a lottery ticket; apply only if you also have likelier options.

Open Risks

Weighted GPA unknown. Both UCLA (4.54-4.83) and Cal Poly (4.14-4.25) publish weighted ranges; a 3.8 unweighted GPA may sit below them. Confirm the weighted/capped UC GPA with the counselor.
No ME-specific admit data for UC Davis or Cal Poly was found.
ABET status not verified for any ME program from a fetched page. Confirm in ABET's accredited-program search.
Net cost at $90k income was not retrieved for any campus; the Scorecard figures are all-income averages from a 2022-23 vintage.
Outcomes are all-majors, not ME-specific.
Cal Poly deadline year not stated on its page; verify the fall 2027 cycle.
Special needs: none were listed in the profile; none checked.
Aid deadline: FAFSA/California Dream Act Application opens Oct. 1 and is due March 2 for UC (UC dates); today is Oct. 5, 2026, so the window is open.

Questions to Ask on Visits or of Admissions

UCLA: what share of Samueli ME admits come from the unweighted GPA range of 3.7-3.9, and how is capped weighted GPA calculated for engineering?
UC Davis: what is the fall 2025 admit rate for the ME major, and is engineering reviewed differently from the rest of the campus?
Cal Poly: are SAT scores used at all in selection, and how does the ME major's selected GPA range compare with the college-wide 4.14-4.25?
Cal Poly: what grant aid does a California family at $90k typically receive, and does it cover tuition?
All three: what percent of ME students complete a paid internship or co-op, and how does the program help find one?
UCLA and UC Davis: how large are lower-division engineering classes, and how accessible are professors given the campus sizes?
All three: is the ME program ABET-accredited, and what is the ME-specific four-year graduation rate?
All three: what is the realistic total cost for an ME student including housing in year 1 versus later years?

Do Next

Run each school's net price calculator (UCLA, UC Davis, Cal Poly) with the $90k income to replace the estimates here.
Get the weighted, capped UC GPA from the school counselor and compare it with UCLA 4.54-4.83 and Cal Poly 4.14-4.25.
File the UC application (closes Nov 30, 2026) and the Cal State Apply application (Oct 1-Nov 30) before the deadline; add alternate majors at UC Davis.
File the FAFSA or California Dream Act application before March 2, 2027 (UC dates).
Verify ABET accreditation for each ME program in ABET's directory.

Near Misses

Not researched (not named in the brief): other UCs, CSU campuses such as Cal Poly Pomona, or community college transfer routes.

Coverage

Not retrievable: College Scorecard pages (JavaScript-rendered; I used collegedata.fyi's copy of Scorecard data instead), UCLA ME department page, ABET directory, and ME-specific admit data for UC Davis and Cal Poly. Campus distance was not computed because no home location was given.